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Genetics Ch.12

Total questions: 38

Worksheet time: 32mins

Name
Class
Date
1.

Which of the following scientists is considered the "father of genetics"?

a)

Gregor Mendel

b)

Francis Crick

c)

James Watson

d)

Robert Hooke

2.

The physical appearance of an organism is known as which of the following?

a)

Phenotype

b)

Genotype

c)

Genetics

d)

Gene

3.

Which of the following terms is the science of heredity?

a)

Cytology

b)

Entomology

c)

Genetics

d)

Botany

4.

If a trait is described by its alleles, for example Bb, what are you describing?

a)

the Genotype

b)

the Phenotype

c)

the phase

d)

the Punnett Square

5.

Which of the following is used help predict the genotype and phenotype combinations in genetic crosses?

a)

Karyotype

b)

Pedigree

c)

Punnett Square

d)

Genetics

6.

An allele that can be hidden or masked is called...

a)

Dominant

b)

Recessive

c)

Allele

d)

None of these

7.

An allele that masks or hides a gene is referred to as which of the following?

a)

Dominant

b)

Recessive

c)

Allele

d)

None of these

8.
The different forms of a gene are called
a)
Alleles
b)
Genes
c)
DNA
d)
None of these
9.
In genetics, which principle states that some alleles are dominant and others are recessive?
a)
Principle of dominance
b)
Principle of recessiveness
c)
Principle of generations
d)
None of these
10.

Which of the following is an example of a phenotype?

a)

Two identical alleles

b)

Green pea pod

c)

Gg

d)

None of these

11.

Which of the following is an example of a genotype?

a)

Two identical alleles

b)

Green pea pod

c)

Gg

d)

None of these

12.

Which of the following is describes homozygous?

a)

Two identical alleles

b)

Green pea pod

c)

Gg

d)

None of these

13.

Which of the following is an example of a heterozygous genotype?

a)

Two identical alleles

b)

Green pea pod

c)

Gg

d)

None of these

14.

In guinea pigs, black hair is dominant to white hair. Heterozygous male guinea pigs with black hair (Bb) are crossed with heterozygous female guinea pigs with black hair (Bb). The incomplete punnett square in Figure 11–4 shows the expected results from the cross. Identify the genotype of the off spring that would be represented by the ?? in Figure 11–4.

a)

BB

b)

Bb

c)

bb

d)

None of these

15.

In guinea pigs, black hair is dominant to white hair. Heterozygous male guinea pigs with black hair (Bb) are crossed with heterozygous female guinea pigs with black hair (Bb). The incomplete punnett square in Figure 11–4 shows the expected results from the cross. Identify the phenotype of the offspring represented by the ?? in Figure 11–4.

a)

Black

b)

White

c)

Gray

d)

Both Black and White

16.
Having two different alleles for a particular gene
a)
Fertilization
b)
Heterozygous
c)
Segregation
d)
Homozygous
17.
Having two identical alleles for a particular gene
a)
Polygenic trait
b)
Genetics
c)
Trait
d)
Homozygous
18.
Likelihood that a particular event will occur
a)
Probability
b)
Heterozygous
c)
Incomplete dominance
d)
Phenotype
19.
Offspring of crosses between parents with different traits
a)
Polygenic trait
b)
Heterozygous
c)
Hybrid
d)
Phenotype
20.

One of Mendel's principles that states that genes for different traits can segregate independently during the formation of gametes

a)

Gene

b)

Genotype

c)

Independent assortment

d)

Homozygous

21.
Process in sexual reproduction in which male and female reproductive cells join to form one new cell
a)
Fertilization
b)
Genotype
c)
Segregation
d)
Phenotype
22.
Separation of alleles during gamete formation
a)
Polygenic trait
b)
Genetics
c)
Segregation
d)
Multiple allele
23.
Sequence of DNA that codes for a protein and thus determines a trait
a)
Gene
b)
Heterozygous
c)
Segregation
d)
Homozygous
24.
Situation in which one allele is not completely dominant over another
a)
Fertilization
b)
Genetics
c)
Incomplete dominance
d)
Homozygous
25.
Situation in which the phenotypes produced by both alleles are completely expressed
a)
Gene
b)
Codominance
c)
Incomplete dominance
d)
Phenotype
26.
Trait controlled by two or more genes
a)
Polygenic trait
b)
Genotype
c)
Trait
d)
Homozygous
27.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
28.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
29.

The principal of ___________________ states that every individual carries 2 alleles for each trait. These alleles separate during the formation of gametes.

a)

dominance & recessiveness

b)

segregation

c)

independent assortment

30.

The principal of ____________________ states that the alleles for one gene had no effect on the alleles of another gene.

a)

dominance & recessiveness

b)

segregation

c)

independent assortment

31.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
32.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
33.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
34.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
35.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
36.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
37.

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

a)

9/16

b)

3/16

c)

1/16

d)

16/16

38.

If a Homozygous red (RR) 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%