wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Physiological Genetics

Total questions: 131

Worksheet time: 2hrs 11mins

Name
Class
Date
1.

…….. an allele that is masked whenever the dominant allele is present

a)

Dominant

b)

recessive

c)

Co-Dominant

2.

which of the following influence an organism phenotype

a)

recessive

b)

Dominant

c)

all of them

3.

……………. some alleles for gene aren’t completely dominant the other

a)

Dominant

b)

recessive

c)

incomplete dominanc

4.

……………….. two alleles affect the phenotype in separate and distinguishable ways.

a)

Incomplete Dominance

b)

recessive

c)

co-dominance

5.

…………….. mean that the dominant genes give the same phenotype as the recessive genes

a)

recessive epistasis

b)

Co-dominance

c)

recessive

6.

…………… mean that one dominant gene epistatic on one dominant gene

a)

Co-dominance

b)

dominant epistasis

c)

recessive epistasis

7.

………….. from the type of epistasis

a)

dominant epistasis

b)

recessive epistasis

c)

all of them

8.

Sex Expression is governed by…......

a)

chromosomes

b)

Genes

c)

Both of them

9.

There are two general types of cells………

a)

Somatic and Epidermal cells

b)

Epithelium and Neuron cells

c)

Somatic and germ cells

10.

Chromosomes often come in pairs called……....

a)

Homozygous

b)

Homologous

c)

Heterozygous

11.

Mitosis is……......

a)

Two progeny with same ploidy as parent cell

b)

Two progeny with different ploidy as parent cell

c)

Four progeny with half ploidy of parent cell

12.

Heterozygous females transmit mutation to……..

a)

All of the offspring

b)

1/4 of their sons

c)

1/2 of their sons

13.

IF Many genes can contribute to single product how do we know if 2 mutation causing same phenotype are in same gene?

a)

We use a simple genetic test , called a complementation test

b)

We use a simple genetic test , called a complementary test

c)

We use a complex genetic test , called a complementation test

14.

In most plants , ..............reproductive organs are found in the same flower is called as Bisexual or Hermaphrodite.

a)

male

b)

female

c)

male and female

15.

Which of the following is an important sex-determining mechanism?

a)

Sex character

b)

Chromosomal sex determination

c)

All of them

16.

Chromosomes which do not differ imorphology and number in male and female…..........

a)

autosome

b)

Allosomes

c)

both of them

17.

types of chromosomal sex determination:

a)

Sex determination by allosomes

b)

Genic balance system

c)

all

18.

one side of the fly is male and the other side is female. This is the most common type of sex mosaic……

a)

Bilateral sex mosaic

b)

Antero-posterior sex mosaic

c)

Sex mosaic in Patches

19.

.....…….are generally of X and Y types, but in some birds they are of Z and W types

a)

Autosomes

b)

Allosomes or sex chromosomes

c)

Diploid-Haploid

20.

The Genic Balance System is the system was developed by…....….in……........

a)

Bridges in Drosoplaila

b)

Hindll in E.coli

c)

mendel in Drosoplaila

21.

the front half of the fly is one sex and the rear half of the other sex.

a)

Sex mosaic in Patches

b)

Antero-posterior sex mosaic

c)

Bilateral sex mosaic

22.

Responsible for the Laws governing Inheritance of Traits…….

a)

cloud bernar

b)

starling

c)

Gregor Mendel

23.

any characteristic that can be passed from parent to offspring is…..

a)

Trait

b)

Heredity

c)

Genetics

24.

General environmental refers of……..

a)

genetic

b)

physica

c)

Both of them

25.

cell division that reduces chromosome number by ½ (2n) is…….....

a)

Meiosis

b)

Mitosis

c)

non of them

26.

...…….is used to increase genetic diversity of gametes produced

a)

meiosis

b)

crossing overseas

c)

both

27.

Type of division which produces half ploidy of mother

a)

mitosis

b)

meiosis

c)

all

28.

crossing over is used to ………

a)

increase genetic diversity of gametes that produced

b)

reduce genetic diversity of gametes that produced

c)

stop genetic diversity of gametes that produced

29.

steps of Meiosis 1 are …….

a)

prophase 1

b)

metaphase 1

c)

All of the above

30.

at meiosis 2 , which occur …….

a)

(DNA replication occur

b)

Nuclear envelope may reform transiently

c)

both of them

31.

........... cross involving a single trait such as flower colour

a)

Dihybrid cross

b)

monohybrid

c)

all of them

32.

-the physical feature resulting from a genotype such as red and white

a)

Genes

b)

genotype

c)

phenotype

33.

.........genotype-gene combination of one dominant and one recessive allele called hybrid

a)

heterozygous

b)

Homozygous

c)

both of them

34.

types of genetic crosses…..

a)

Monohybrid cross

b)

Dihybrid cross

c)

both of them

35.

Chromosome Types is …….

a)

autosome

b)

allosomes

c)

all of above

36.

....….chromosomes which differ in morphology ,number in male ,female

a)

allosomes

b)

sex chromosomes

c)

both 0f them

37.

…….Exhipit sex linkage

a)

allosome

b)

autosome

c)

both of them

38.

-xx-xy female and male system exsist in ……..

a)

mammals

b)

Dorosophila

c)

all of above

39.

Tybes of alleles is……

a)

dominant

b)

recessive

c)

all of above

40.

..…… physical feature result from genotype

a)

phenotype

b)

allele

c)

trait

41.

pollen contain sperm which produced by……..

a)

stamen

b)

ovary

c)

all of above

42.

….. an allele that is expressed whenever it is present

a)

Dominant

b)

recessive

c)

co-dominant

43.

mendel produced pure strains through …...........

a)

self pollinaited

b)

cross pollinatied

c)

both

44.

mendel study inheritance of traits on ……

a)

pea plant

b)

rice

c)

wheet

45.

at first mendel assumed that traits inherited as ….......

a)

Chromosome

b)

particles

c)

both

46.

- ............….chromosomes which don’t differ in morphology ,number in male ,female

a)

allosomes

b)

autosome

c)

sex chromosomes

47.

Sex expression is governed by chromosomes and genes in ……..

a)

Unisexual animals

b)

bisexual animals

c)

none of them

48.

Unisexual diploid individuals have ……… sex chromosomes and rest are autosomes

a)

Two

b)

three

c)

four

49.

In Autosomes chromosomes no. is …….

a)

2n-1

b)

2n+1

c)

n-1

50.

Mechanism of Sex determination ………….. important mechanisms

a)

two

b)

three

c)

four

51.

Expression of sex is influenced by……

a)

single gene

b)

double gene

c)

triple gene

52.

turtle, Alligators and Crocodiles Incubation temperature of egg is ……… in female

a)

30-35ºC

b)

35-40ºC

c)

25-30ºC

53.

Drosophila flies …………… have male tissues in one part of the body and female tissues in other.

a)

(1 in 1000)

b)

(2 in 1000)

c)

(1 in 2000)

54.

n turtle, Alligators and Crocodiles Incubation temperature of egg is ……… in male

a)

30-35ºC

b)

23-28ºC

c)

25-30ºC

55.

Drosophila Individuals with such sex mosaic are known as……..

a)

gynandromorphs

b)

gynanders

c)

both

56.

Three patterns of sex mosaic may be found in Drosophila

a)

Bilateral sex mosaic

b)

Antero-posterior sex mosaic

c)

all of them

57.

In Autosomes Morphology is ………in male and female.

a)

similar

b)

different

c)

none of them

58.

................gene combination for a trait.

a)

Genotype

b)

Phenotype

c)

none of them

59.

.........Gene combination involving 2 dominant or 2recessive genes and also called pure.

a)

Homozygous

b)

Heterozygous

c)

both of them

60.

Two alleles are expressed in heterozygous in dividuals....................

a)

Incompletedominance

b)

Codominance

c)

phenotype

61.

Example of incomplete dominance..................

a)

Snapdragons

b)

Bloodtype

c)

gynanders

62.

In humans, each cell normally contains ........... of chromosomes.

a)

11 pairs

b)

23 pairs

c)

32 pairs

63.

............ explained genetic disorders such as alkaptonuria and albinism.

a)

Recessive inheritance

b)

Dominant genes

c)

X chromosomes

64.

The ........ is the set of observable characteristics and is the sum of genetic and environmental effects.

a)

genotype

b)

phenotype

c)

both genotype and phenotype

65.

What is a section of DNA that codes for a protein called?

a)

Gene

b)

Chromosome

c)

Allele

66.

Which of these is a correct type of mutation?

a)

Transcription

b)

Polymerase

c)

Substitution

67.

Crossing-over takes place in the........

a)

Diakinesis stage

b)

Anaphase stage

c)

Pachytene stage

68.

There are 4 pairs of chromosomes in a Drosophila. The linkage groups present in it are

a)

one more than the pair of chromosomes

b)

four

c)

eight

69.

Percentage of crossing over is more when

a)

genes are located in a different cell

b)

genes are not linked

c)

linked genes are located far apart from each other

70.

If the percentage of crossing over between two genes is 10, then the distance between two genes will be

a)

5 morganoid

b)

10 centimorgans

c)

20 centimorgan

71.

Alleles of different genes that are on the same chromosome can occasionally be separated by a phenomenon called

a)

crossing over

b)

continuous variation

c)

epistasis

72.

Repulsion and coupling are two faces of

a)

mutation

b)

chiasmata

c)

linkage

73.

If gene frequency between genes a and c is 2%; b and c is 13%; b and d 4%; a and b 15%; c and d 17 and a and d 19%. The sequence of genes in a chromosome is

a)

a,d,b,c

b)

a,b,c,d

c)

a,c,b,d

74.

This is the reason why Mendel did not recognize linkage phenomenon in his experiments

a)

characters he studied were situated on different chromosomes

b)

he studied only pure plants

c)

he did not have a powerful microscope

75.

In a linear chromosome map distance between 4 loci is as follows a-b is 10%, a-d is 3%, b-c is 4% and a-c is 6%. The crossover frequency between c and d is

a)

12%

b)

3%

c)

9%

76.

Where does this evidence come from? – crossing over takes place at a four-stranded stage and not at two stranded stages of chromosomes

a)

studies on linkage maps of chromosomes in Drosophila

b)

studies of meiosis in maize

c)

2:2:2:2 organization of ascospores in Neurospora

77.

In some plant male and female flowers are produced on different plants is called as ..........

a)

Bisexual

b)

monoecious

c)

Dioecious

78.

In the ........... system ,female has only one X chromosome and hence is heterogametic

a)

XX-XO [Female-Male] System

b)

XO-XX [Female-Male] System

c)

ZW ZZ [Female-Male] System

79.

In honey bees,the females have diploid (2n=.......) chromosomes and drones or males have haploid(n=........) chromosomes.

a)

32 , 16

b)

46 , 23

c)

20 , 10

80.

............... one side of the fly is male and the_otherside female.This is the most common Type of sex mosaic.

a)

Sex mosaic Patches

b)

Antero-posterior sex mosaic

c)

Bilateral sex mosaic

81.

How many gametes will be produced for the followibg allele arrangement? (RrYy)

a)

2 gametes

b)

4 gametes

c)

6 gametes

82.

.........,gene that shows up less often in a cross, represented by a lowecase letter (r)

a)

Dominant

b)

Recessive

c)

Dominant and recessive

83.

How many gametes will be produced for the followibg allele arrangement? (AaBbCCDd)

a)

4 gametes

b)

6 gametes

c)

8 gametes

84.

Most studies on human genetics have been made through

a)

Genetic engineering

b)

Eugenics

c)

Microscopic studies of Chromosomes

85.

The symbol of empty circles used in pedigree analysis represents

a)

Normal female

b)

Affected female

c)

Affected male

86.

The RNA and Protein Synthesis Occur in____

a)

M phase

b)

S phase

c)

G1 phase

87.

When Synapsis Occurs at Meiosis?

a)

Zygotene

b)

Leptotene

c)

Diplotene

88.

Chromosomes Break During?

a)

Prophase

b)

Ana phase

c)

Metaphase

89.

Call the step of prophase I when synaptonemic complex dissolves, when chromatids are transparent and tetrads are considered bivalents

a)

Packytene

b)

Diakinesis

c)

Diptolene

90.

Syndactyly refers to

a)

Fused fingers

b)

Fused toes

c)

both of them

91.

Presence of extra finger or toe is known as

a)

POLYDACTYLY

b)

Brachydactyly

c)

None of the above

92.

Polydactyly in man due to

a)

Autosomal dominant gene

b)

Autosomal Recessive gene

c)

Sex linked dominant gene

93.

According to Mendelian ratios. Interactions between mutations in different genes can modify ……. phenotypic ratios.

a)

9:3:3:1

b)

3:3:1:9

c)

9:1:3:3

94.

Crossing over results in ………..

a)

Gametes

b)

New genetic combination

c)

Cancerous growths

95.

in …… cycle two progeny with same ploidy as parent cell

a)

Miosis

b)

Mitosis

c)

both of them

96.

In ………. the chromosomes are not condensed.in miotic cycle.

a)

Interphase

b)

Metaphase

c)

Anaphase

97.

information are stored in DNA in a series called

a)

Phosphor bases

b)

Nitrogen bases

c)

Iron bases

98.

Which of the following statements is true about Mendel?

a)

He believed that genetic traits of parents will usually blend in their children

b)

His ideas about genetics apply equally to plants and animals

c)

Non of them

99.

Phenotype refers to the ……… of an individual

a)

actual physical appearance

b)

physical features resulting from phenotype

c)

both of them

100.

The important of Nucleic Acid …..

a)

keep Genetic Material

b)

Transfer Genetic Material to offspring

c)

all of them

101.

pattern of sex chromosome in human

a)

XO pattern

b)

WZ pattern

c)

XY pattern

102.

Hereditary determinants for the traits in the parental line were inherited as 2 different elements that retain their purity in the hybrid.

a)

Gene

b)

Mutations

c)

Mendel’s genetic hypothesis

103.

-………….. is change in the nucleotides sequence of a gene and may involve

a single nucleotide.

a)

Deletion

b)

Gene Mutation

c)

Mutation

104.

………… is 1 in 109 billion replicated base pairs

a)

Substitutions

b)

Transition

c)

Spontaneous Mutation Rate

105.

A purine base is replaced by a purine base or pyrimidine base is replaced by another pyrimidine base is process called ……….

a)

Substitution

b)

Transition

c)

Transversion

106.

………… is substitution of purine base by a pyrimidine base and vice versa.

a)

substitution

b)

Transition

c)

Transversion

107.

………….. is result in a different amino acid at one position of encoded protein.

a)

Missense Mutation

b)

Nonsense Mutation

c)

Silent Mutation

108.

………… converts a codon that specific an amino acid into a termination codon

a)

Missense Mutation

b)

Nonsense Mutation

c)

Silent Mutation

109.

-………… is inverted or deleting one or more nucleotides and change the reading frame.

a)

Phenotypic

b)

Frameshift Mutation

c)

Natural Mutation

110.

-………… is a different codon but still encodes for some amino acid.

a)

Missense Mutation

b)

Nonsense Mutation

c)

Silent Mutation

111.

-………… is changes amino acid sequence, but does not alter function of protein

a)

Natural Mutation

b)

Nonsense Mutation

c)

Silent Mutation

112.

…………. Occurs at a site different from the site of original mutation

a)

Natural Mutation

b)

suppressor Mutation

c)

Silent Mutation

113.

………… is any agent that causes a mutation.

a)

Gene

b)

Hereditary

c)

Mutagen

114.

A genetic make-up affects expression of traits is …………

a)

Genetic suppression

b)

Genetic Constitution

c)

Genetic Anticipation

115.

-………… is occurrence of genetic disorder at progressively earlier ages in

subsequent generations.

a)

Genetic suppression

b)

Genetic Constitution

c)

Genetic Anticipation

116.

-………… is process the cell can divided into 2 identical cells like the father cell.

a)

Meiosis

b)

Mitosis

c)

Not of them

117.

What are 3 patterns of sex mosaic may found in Drosophila ?

a)

Antero-posterior

b)

sex mosaic

c)

all of them

118.

Male and female reproductive organs are found in the different flower of same plant is called as

a)

monoecious

b)

dioecious

c)

triple

119.

Passing of traits from parent to offspring

a)

Heredity

b)

Trait

c)

Genetics

120.

………. are any sudden change occurring in hereditary material and can occur naturally

a)

Gene Mutation

b)

Gene

c)

Mutation

121.

what is two types of cell….

a)

somatic cell

b)

germ cell

c)

both of them

122.

In general, genatic disorders are very…..

a)

useful

b)

harmful

c)

rare

123.

Example of pattern of inheritance……

a)

albinism and sickle cell anemia

b)

cystic fibrosis

c)

Both of them

124.

digram of familial relationship and transmition of traits

a)

sex linked

b)

genotype

c)

pedigree

125.

A foetus’ determination of gender is dependent on

a)

mother’s age

b)

father’s health

c)

sperm’s nature

126.

This technique can be used to detect the chromosomal abnormality of an unborn baby

a)

Ultrasound

b)

Amniocentesis

c)

CAT Scanning

127.

In this plant, sex determination was first studied

a)

Mirabilis

b)

Melandrium

c)

Datura

128.

If a boy has sexual characters of that of a girl, its genotype would be

a)

XYY

b)

XO

c)

XXY

129.

The condition of Free martin is observed in

a)

Frog

b)

Rabbit

c)

Goat/sheep

130.

In an entity with genetic composition AA+XXY such as Drosophila will be a normal female. In the case of mammals, it will be?

a)

Turner

b)

Klinefelter

c)

Normal female

131.

من يسكن البحر و يحبه الناس؟

a)

سبونج بوب سكوير بانتس

b)

شفيق حبار

c)

بسيط النجم

d)

مستر سلطع