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Botany Part 1

Total questions: 93

Worksheet time: 47mins

Name
Class
Date
1.

The subject that deals with inheritance and variation is called __________

a)

Heredity

b)

Variation

c)

Genetics

2.

Sahiwal cows in Punjab were developed by ______________

a)

Inbreeding of inherited characters of domesticated cows

b)

Artificially selecting the wild cow breeds with desirable variations.

3.

Which of the following is not a characteristic of Mendel's experiment?

a)

Experiments had small sampling size

b)

Each character of garden pea used had two opposing traits.

c)

Statistical analysis and mathematical logic were applied to problems in biology.

4.

A true breeding pea plant variety is the one that shows _____________________

a)

Varying traits every generation after undergoing continuous cross pollination.

b)

stable trait inheritance every generation after undergoing continuous self pollination.

5.

Choose the option that shows recessive traits in pea plant

a)

tall height

b)

violet flower

c)

axial flower position

d)

green seed colour

6.

Which of the following shows the characteristics of F1 progeny plants in Mendel's monohybrid cross experiments?

a)

F1 resembled either one of the parents and the trait of the other parent was not seen.

b)

F1 did not resemble either of the parents, and was in between the two.

c)

F1 resembled both the parents

7.

When a red flowered snapdragon plant is crossed with a white flowered snapdragon plant, the F1 progeny shows _______________ colored flowers.

a)

Red

b)

Pink

c)

white

8.

Identify the Mendel's Law that states that though the parents contain both the alleles, during gamete formation alleles will separate and each gamete will get only one allele.

a)

Law of Dominance

b)

Law of Independent assortment

c)

Law of segregation

9.

In Mendel's experiment, when tall pea plants were crossed with dwarf pea plants, F1 generation showed all tall plants (dominant trait). The recessive trait dwarfness did not get expressed because ________________

a)

the allele responsible, produced normal enzyme for tallness.

b)

the allele responsible, produced no enzyme for the expression of tallness.

10.

The human blood group AB, is coded by genes that shows _____________________

a)

Law of Dominance

b)

Law of Codominance

c)

Law of incomplete dominance

11.

Conditions of a karyotype 2n+1 and 2n ± \pm\   2 is called

a)

Monosomy

b)

Aneuploidy

c)

Alloploidy

d)

Polyploidy

12.

In sickle cell anaemia, glutamic acid is replaced by valine. Which one of the following triplets codes for valine

a)

GAA

b)

GAG

c)

GUA

d)

GUG

13.

Persons having genotype IAIB would show the blood group AB. This is because of

a)

Pleiotropy

b)

Co-dominanace

c)

Segregation

d)

Incomplete dominanace

14.

The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in pedigree analysis is equivalent to

a)

Quantative trait

b)

Mendelian trait

c)

Maternal trait

d)

Polygenic trait

15.

Distance between genes and advantages of recombination shows

a)

direct relationship

b)

inverse relationship

c)

parallel relationship

d)

no relationship

16.

All genes located on the same chromosome

a)

forms different groups depending upon their relative distance

b)

form one linkage group

c)

will not form any linkage groups

d)

forms interactive group that affect the phenotype

17.

If a haemophilic woman marries a normal man

a)

all their children will be normal

b)

all their sons will be haemophilic

c)

all their daughters will be haemophilic

d)

50% sons and 50% daughters will be haemophilic

18.

A woman with normal vision has a colourblind father. she marries a colourblind man. What proportion of their children will be colourblind?

a)

25%

b)

0%

c)

50%

d)

100%

19.

In a dihybrid cross if you get 9:3:3:1 ratio, it denotes that

a)

The alleles of two genes are interacting with each other

b)

Its multigenic inheritance

c)

It exhibits multiple allelism

d)

The alleles of two genes are segregating independently

20.

Ocassionally a single gene may express more than one effect. This phenomenon is called

a)

multiple allelism

b)

mosaicism

c)

pleiotropy

d)

polygeny

21.

Haplodiploidy technique of sex determination facilitates

a)

only male species

b)

only females

c)

evolution of sociality

d)

dosage compensation

22.

Y - linked genes are holandric genes

a)

True

b)

False

c)

Can not be determined

23.

Recessive gene for haemophilia lacks

a)

cones

b)

melanin

c)

thromboplastin

d)

hepatic enzyme

24.

Diagrammatic representation of chromosome is

(a)  

25.

it is used to stop the cell division at metaphase of karyotyping.

a)

Renin

b)

colchicine

c)

sebum

d)

melatonin

26.

choose the wrong statement regarding thalassemia.

a)

autosomal recessive disorder

b)

Excessive destruction of WBC

c)

Beta thalassemia is the common type.

d)

gene is located in chromosome 11.

27.

Which is an autosomal dominant disorder

a)

Thalassemia

b)

Phenylketonuria

c)

Albinism

d)

Huntington's chorea

28.

Trisomy -21 is

a)

Down's syndrome

b)

Patau's syndrome

c)

Kleinfelter's syndrome

d)

Turner's syndrome

29.

XO females are

a)

Klinefelter's syndrome

b)

Turner's syndrome

c)

Patau's syndrome

d)

Down's syndrome

30.

In an albino the number of melanocytes are normal.

a)

True

b)

False

31.

Mendel's Law was rediscovered by

a)

a. Correns, De Vries, Morgan

b)

b. Correns, Tshermak,, Morgan

c)

c. Correns, Tshermak,, Boveri

d)

d. Correns, Tshermak,, deVries

32.

If tall pea plant (Tt) is crossed with dwarf plant(tt), which one of the following will be obtained?

a)

a. 25% recessive

b)

b. 50% recessive

c)

c. 75% recessive

d)

d. No recessive

33.

Red flower (RR) flower of Antirrhinum is crossed with white flower (rr). If the offspring obtained in F1 generation is pink flower, what type of inheritance will it be called?

a)

a. Co-Dominance

b)

b. Dominant Recessive

c)

c. Epistasis

d)

d. Incomplete Dominance

34.

The allele which fails to express in the presence of another allele of the same character is called ______ allele.

a)

a. Dominant

b)

b. Codominant

c)

c. Recessive

d)

d. Multiple

35.

If two genes lie very close to each other, it will show

a)

a. high degree of crossing over

b)

b. double crossing over

c)

c. low linkage

d)

d. nil or low crossing over

36.

The genotype of a plant is AaBb. How many different type of genotype in gametes it can produce?

a)

a. one

b)

b. Two

c)

c. Four

d)

d. Eight

37.

Application of Mendel's law is limited to

a)

a. when parents are true breeding types

b)

b. any crosses

c)

c. linked genes only

d)

d. very high recombinants

38.

Strength of linkage is inversely proportional to distance between

a)

a. chromatids

b)

b. telomeres

c)

c. genes

d)

d. chromosomes

39.

If the father is haemophilic and mother is normal, then the daughter will have chance to

a)

a. be haemophilic

b)

b. be carrier of haemophilia

c)

c. be normal always

d)

d. not receive any gene of haemophilia any time

40.

Turner syndrome is

a)

47+XXY

b)

45+XO

c)

46+XY

d)

47+XX

41.

Crossing over occurs in

a)

a. Leptotene

b)

b. Zygotene

c)

c. Pachytene

d)

d. Diplotene

42.

When a single gene causes more than one effect, it is called

a)

a. Multiple allele

b)

b. Pleiotropy

c)

c. polygenes

d)

d. quantitative inheritance

43.

Of the seven characters studied by Mendel, which of the following trait mentioned below is incorrect?

a)

a. Axillary flower is dominant trait

b)

b. green colour seed is a recessive trait

c)

c. Green colour pod is a recessive trait

d)

d. wrinkled seed is a recessive trait

44.

Given below are statements on Mendelian Monohybrid cross. Find the statement which is not correct.

a)

a. Reciprocal crosses produce same results

b)

b. Contrasting traits appear in F2 generation in the ratio 3:1

c)

c. Only the dominant trait expresses in the F2 generation

d)

d. one of the contrasting trait remains unexpressed in F1 generation

45.

Who coined the term 'gene'?

a)

a. Mendel

b)

b. Johannsen

c)

c. Morgan

d)

d. Boveri

46.

Which of the following statement is considered to be universal?

a)

a. within a pair of factors, one always dominates the other

b)

b. Two factors of a trait separates during gamete formation

c)

c. Blending of traits do not occur

d)

d. None of the statements are universal

47.

Which of the following is not the cause of Mendel's success in formulating basic principles of heredity?

a)

a. Garden pea was ideal for controlled breeding since cross pollination was easy

b)

b. Mendel selected pea plants randomly from his garden for experiments

c)

c. He used statistical method and laws of probability to analyse results

d)

d. He studied inheritance of single character with two contrasting traits at a time

48.

Given below are statements to differentiate between genotype and phenotype. On of the statements is incorrect. Find it.

a)

a. Genotype is the gene equipment which determines the trait whereas phenotype is expression of the trait

b)

b. Phenotype can be observed directly while genotypes cannot be observed but ascertained

c)

c. genotype changes under environmental influence, phenotype do not

d)

d. Phenotype is determined by genotype while genotype is not determined by phenotype

49.

Which of the following statement is not correct about Incomplete dominance?

a)

a. Both the allele expresses their typical phenotypes

b)

b. Hybrid has new phenotype but has no gene

c)

c. There is blending of traits

d)

d. alleles show quantitative effect

50.

Study the following statements on Sex Linked inheritance. Find the incorrect statement.

a)

a. Father passes X linked allele to his daughter who in turn passes to her son

b)

b. Mother passes the allele both to her daughter and son

c)

c. X-linked alleles are more likely to express in females than males

d)

d. Most of the sex linked traits are recessive

51.

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :

a)

T.H. Morgan

b)

Gregor J. Mendel

c)

Alfred Sturtevant

d)

Sutton Boveri

52.

In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following :

a)

This experiment does not follow the Principle of Dominance.

b)

Pink colour in F1 is due to incomplete dominance.

c)

Ratio of F2 is 1/4 (Red) : 2/4 (Pink) : 1/4 (White)

d)

Law of Segregation does not apply in this experiment

53.

What map unit (Centimorgan) is adopted in the construction of genetic maps?

a)

A unit of distance between two expressed genes representing 10% cross over.

b)

A unit of distance between two expressed genes representing 100% cross over.

c)

A unit of distance between genes on chromosomes, representing 1% cross over.

d)

A unit of distance between genes on chromosomes, representing 50% cross over.

54.

Select the incorrect statement.

a)

Male fruit fly is heterogametic

b)

In male grasshoppers 50% of sperms have no sex-chromosome

c)

In domesticated fowls, sex of progeny depends on the type of sperm rather than egg

d)

Human males have one of their sexchromosome much shorter than the other

55.
a)

(A)-(iv), (B)-(ii), (C)-(i), (D)-(iii)

b)

(A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)

c)

(A)-(i), (B)-(iv), (C)-(ii), (D)-(iii)

d)

(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)

56.

In a marriage between male with blood group A and female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of parents?

a)

IA i (Male) ; IB i (Female)

b)

IA i (Male) ; IB IB(Female)

c)

IAIA(Male) ; IBIB (Female)

d)

IA IA (Male) ; IB i (Female)

57.
a)

(A) - i, (B) - ii, (C) - iii, (D) – iv

b)

(A) - ii, (B) - iii, (C) - iv, (D) - i

c)

(A) - iii, (B) - i, (C) - iv, (D) – ii

d)

(A) - i, (B) - iii, (C) - iv, (D)- ii

58.

F1 individual of the cross AAbb x aaBB was test crossed. If both non-allelic genes are 24 map units apart then calculate the percentage of aaBb :

a)

24%

b)

12%

c)

76%

d)

38%

59.

In Mendel’s dihybrid cross, the number of plants which are homozygous for only one character :

a)

7/16

b)

8/16

c)

6/16

d)

5/16

60.

The linkage map of X-chromosome of fruitfly has 66 units, with yellow body gene (Y) at one end and bobbed hair (b) gene at the other end. The recombination frequency of these two genes (Y and b) should be :

a)

66%

b)

> 50%

c)

< 50%

d)

100%

61.
A cross between a blue blahblah bird & a white blahblah bird produces offspring that are silver. The color of blahblah birds is determined by just two alleles. What are the genotypes of the parent blahblah birds in the original cross?
a)
blue (BB) and white (WW)
b)
blue (BB) and white (B'B')
c)
blue (BB) and white (bb)
d)
blue (BB) and white (ww)
62.
What is the name of the process in which DNA is turned into mRNA? 
a)
a.) Translation 
b)
b.)Replication 
c)
c.)Transcription 
d)
d.)Synthesis
63.
What is epigenetics?
a)
A.) Study of heritable changes in genome function that occur without alterations to the DNA sequence.
b)
B.) All organisms hereditary information.
c)
C.) Proteins that wind around the DNA.  disease.
d)
D.) A disease.
64.
What is an example of a sex-linked trait?
a)
A- Autism
b)
B- Cancer
c)
C- Hemophilia
d)
D- Hair Color
65.
A woman with brown hair (BB) marries and mates with a man with black hair (bb). What is the probability of the offspring having black hair?
a)
100%
b)
50%
c)
25%
d)
0%
66.
What is crossing over?
a)
A) Swap of nuclei between cells
b)
B) The exchange of genetic material between homologous chromosomes
c)
C) A switch in the brain
d)
D) When cells swap eggs
67.
At what phase during mitosis do the chromosomes first appear in the cell?
a)
interphase
b)
prophase
c)
metaphase
d)
anaphase
68.
Which of the answer choices properly differentiate the meanings of incomplete dominance and co-dominance? 
a)
 A.) Incomplete dominance- a situation where both alleles show up equally; co-dominance- an heterozygous in between phenotype 
b)
B.) Incomplete dominance- an heterozygous in between phenotype; co-dominance- a situation where both alleles show up equally
c)
C.) Incomplete dominance- traits that are passed down halfway to the offspring but not completely; co-dominance- when both parents have a dominant phenotype
69.
During the cell cycle, what phase do the replicated chromosomes split apart?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
70.
What did the first/original Human Genome Project do?
a)
A- Sequenced the entire human genome and found we had 20,000 genes that coded for proteins
b)
B- Allowed doctors to be more aware about diseases
c)
C- Created a new resource for life sciences and world wide conservations
d)
D- All of the above
71.
If a mother is a carrier for hemophilia (XHXh) and the father is a hemophiliac (XhY), what is the chance their child will not be a hemophiliac?
a)
a) 25%
b)
b) 50%
c)
c )75%
d)
d) 100%
72.
What is the role of the spliceosome?
a)
A) cuts out introns
b)
B) splices the nucleus
c)
C) cuts out the exons
d)
D) splices the cell
73.
Which of these is an not an example of multi-factorial condition?
a)
a) heart disease
b)
b) diabetes
c)
c) epilepsy
d)
d) sickle cell anemia
74.
A man with AB blood married a women with  A blood. What blood type could their child possibly have?
a)
Type A
b)
Type B
c)
Type AB
d)
all of the above
75.
What does IPS stand for?
a)
a) infographic of phenotypic science
b)
b) induced pluripotent stem cell
c)
interstellar potato surrogate
d)
individual producing symptoms
76.
If a pure black feathered bird and a pure white feathered bird have offspring, what will be the phenotype of the offspring?
a)
A- all black feathered
b)
B- all silver feathered
c)
C- all with black AND white feathers
d)
D- depends on type of inheritance
77.
What exactly does melanin mean?
a)
A.) a pigment that determines hair, eye, and skin color
b)
B.) an enzyme that breaks down Vitamin D
c)
C.) a polygenic trait 
d)
D.) tastes like watermelon
78.
What is one of the bioethics of Belmonts Report?
a)
1) Assurace of privacy 
b)
 2) Respect of property
c)
3) Respect for persons
d)
4) Compensation for participants
79.
Who is most likely to develop a sex-linked disorder? 
a)
A) Women
b)
B) Children
c)
C) Men
d)
D) all of the above
80.
When using a dihybrid punnet square, to predict the probability of offspring from two heterozygous parents, what ratio is expected?
a)
A) 1:1:1:1
b)
B) 2:2:8:4
c)
C) 8:0:0:8
d)
D) 9:3:3:1
81.

The percentage of ab gamete produced by AaBb parent will be

a)

25%

b)

50%

c)

75%

d)

12.5%

82.

Genes located very close to one another on same chromosome tend to be transmitted together and are called as

a)

allelomorphs

b)

identical genes

c)

linked genes

d)

recessive genes

83.

Depending upon the distance between any two genes which is inversely proportional to the strength of linkage, cross overs will vary from

a)

50 - 100%

b)

0 - 50%

c)

75 - 100%

d)

100 - 150%

84.

What is true about the crossing over between linked genes?

a)

no crossing over at all

b)

high percentage of crossing over

c)

hardly any crossing over

d)

none of these

85.

Chromosome maps/ genetic maps were first prepared by

a)

Sutton and Boveri (1902)

b)

Bateson and Punnett (1906)

c)

Morgan (1910)

d)

Sturtevant (1911)

86.

The distance between the genes is measured by

a)

angstrom

b)

map unit

c)

Dobson unit

d)

millimetre

87.

Which of the following is suitable for experiment on linkage?

a)

aaBB X aaBB

b)

AABB X aabb

c)

AaBb X AaBb

d)

AAbb X AaBB

88.

Mendel's law of Independent assortment does not hold true for the genes that are located closely on

a)

same chromosome

b)

non homologous chromosomes

c)

X-chromosome

d)

autosome

89.

If linkage was known at the time of Mendel then which of the following laws, he would not have been able to explain?

a)

Law of Dominance

b)

Law of Independent Assortment

c)

Law of Segregation

d)

Law of Purity of gametes

90.

Experimental verification of 'chromosomal theory of inheritance' was done by

a)

Sutton and Boveri

b)

Morgan et al

c)

Henking

d)

Karl Correns

91.

How many types of gametes are formed by a double recessive parent?

4 lines
92.

Linkage and crossing over are (a)   related.

93.

More the..........between two genes, the more are the chances of................

(a)  

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