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WorksheetsGenetics
Total questions: 50
Worksheet time: 40mins
Name
Class
Date
1.
Process in sexual reproduction in which male and female reproductive cells join to form a new cell.
a)
gene
b)
gamete
c)
fertilization
d)
allele
2.
One of a number of different forms of a gene.
a)
gene
b)
gamete
c)
fertilization
d)
allele
3.
A sex cell that has half the amount of DNA that is found in a body cell.
a)
gene
b)
gamete
c)
fertilization
d)
allele
4.
The passing of traits from parents to offspring
a)
Genetics
b)
Geneology
c)
Heredity
d)
Allele
5.
The study of heredity is known as
a)
Hereditology
b)
Genetics
c)
Biology
d)
Law of Heredity
6.
Plants that produce offspring with the same trait are known to be...
a)
Cross-pollinated
b)
F1 Generation
c)
Self-pollinated
d)
True-breeding
7.
Which law of genetics states that factors are seperated?
a)
Law of Independent Assortment
b)
Law of Segregation
c)
Law of Mendel
d)
Law of Seperation
8.
What were the things that Mendel called "factors"?
a)
Genes
b)
Chromosomes
c)
Alleles
d)
Filials
9.
What is an organism's genetic makeup known as?
a)
Phenotype
b)
Chromosome
c)
DNA
d)
Genotype
10.
The physical appearance of the organism is known as the
a)
Phenotype
b)
Chromosome
c)
Nucleictype
d)
Genotype
11.
When both alleles of a pair are alike, the organism is said to be
a)
Homozygous
b)
Heterozygous
c)
Homologous
d)
Heterologous
12.
What is the likelihood that a specific event will occur?
a)
Probabilty
b)
Chance
c)
Ratio
d)
Test cross
13.
This is an example of what?
a)
Probability
b)
Incomplete dominance
c)
Co-dominance
d)
None of the above
14.
What would the genotypes be?
a)
TT, TT, Tt, Tt
b)
TT, Tt, Tt, tt
c)
Codominance
d)
None of the above
15.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
16.
If T=Tall & t=short, what is the phenotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
17.
What is a cross in which two characteristics are tracked?
a)
Monohybrid
b)
Dihybrid
c)
Double Cross
d)
Dicross Square
18.
Who pioneered genetics?
a)
Johann Sebstian Bach
b)
A German monk named Mendel
c)
Gregor Mendel
d)
John Mendel
19.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
20.
A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?
a)
1
b)
2
c)
3
d)
4
21.
If a Homozygous red snapdragon and a Heterozygous pink snapdragon were crossed - what percentage of the offspring would be homozygous white?
a)
0%
b)
25%
c)
50%
d)
75%
22.
Snapdragon flowers come in red, pink and white. What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Co-dominance
d)
Polygenic Inheritance
23.
How many pairs of chromosomes are in your cells?
a)
23
b)
19
c)
12
d)
10
24.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
25.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
26.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
27.
What is the Punnett square used to predict?
a)
possible genotypes for the cross
b)
which traits are dominant
c)
which traits are recessive
d)
the number of offspring
28.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
29.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
30.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
31.
Which best describes the process shown?
a)
mutation in which the DNA content of the gene is ltered
b)
segregation of sister chromatids
c)
condensation and segregation of the alleles
d)
crossing-over which alleles are exchanged
32.
If a body cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
33.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather thna from eggs
d)
offspring inherit a wider variety of genetic information
34.
What is a tetrad?
a)
4 chromosmes
b)
4 chromatids
c)
2 chromatids
d)
6 chromosomes
35.
In, what phase of meiosis does crossing over occur?
a)
prophase I
b)
prophase II
c)
anaphase I
d)
metaphase I
36.
How many times in meiosis does the cell divided?
a)
2
b)
4
c)
3
d)
1
37.
What phase is shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
38.
What phase is shown in the picture?
a)
metaphase 2
b)
metaphase 1
c)
anaphase 1
d)
prophase 2
39.
When two haploid sex fuse together during fertilization they become ______________
a)
haploid cells
b)
meiosis
c)
mitochondria
d)
diploid cells
40.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
41.
tongue rolling
a)
inherited
b)
acquired
42.
The sex of an offspring is determined by ______________________.
a)
the mother
b)
the father
c)
the mother and the father
d)
by the environment
43.
The person who devised a method to predict the offspring from a cross between to parent genotypes is...
a)
Punnett
b)
Mendel
c)
Watson
d)
Crick
44.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
45.
Polygenic means that _____________________ control a characteristic
a)
many genes
b)
single genes
c)
3 genes
d)
no genes
46.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
47.
When a heterozygote shows a phenotype that is in-between the dominant and recessive phenotype.
a)
co-dominance
b)
incomplete dominance
c)
linked genes
d)
multiple alleles
48.
Term for homozygous organisms that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
49.
Which of the following is NOT an example of a polygenic trait?
a)
Human height
b)
Fur color in dogs
c)
Flower color in pea plants
d)
Eye color
50.
Red/green color blindness is a recessive trait. A woman who is a carrier for this allele marries a normal-vision male. What is the probability that they will have a child who is color blind?
a)
1/4
b)
1/2
c)
3/4
d)
1
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