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Worksheets

Genetics Terms

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following genotypes are homozygous? Check all that apply.

a)

Bb

b)

AA

c)

Gg

d)

RR

2.

Which of the following genotypes are heterozygous? Check all that apply.

a)

EE

b)

FF

c)

Bb

d)

Tt

3.

If purple flowers are dominant to white flowers, which of the following genotypes will be purple? Check all that apply.

a)

PP

b)

Pp

c)

pp

4.

If blue eyes are recessive to brown eyes, which of the following genotypes will be blue? Check all that apply.

a)

bb

b)

Bb

c)

BB

5.

When two alleles in a pair are different (Bb or Mm) they are called

a)

homozygous

b)

heterozygous

c)

trait

d)

genotype

6.

When two alleles in a pair are the same (BB or bb) they are called

a)

heterozygous

b)

gamete

c)

homozygous

d)

zygote

7.

Law of Dominance states

a)

the pair of alleles for a gene will be separated into different gametes

b)

a dominant allele will mask the presence of a recessive allele

c)

during gamete formation, the distribution of the alleles is random

8.

Law of Segregation states

a)

the pair of alleles for a gene will be separated into different gametes

b)

a dominant allele will mask the presence of a recessive allele

c)

during gamete formation, the distribution of the alleles is random

9.

Law of Independent Assortment states

a)

the pair of alleles for a gene will be separated into different gametes

b)

a dominant allele will mask the presence of a recessive allele

c)

during gamete formation, the distribution of the alleles is random

10.

Different forms of a gene are called

a)

recessive

b)

dominant

c)

gametes

d)

alleles

11.

The allele masked by the dominant one

a)

gamete

b)

recessive

c)

zygote

d)

cross-fertilization

12.

The "stronger" of two alleles expressed

a)

dominant

b)

recessive

c)

gamete

d)

gene

13.

Any characteristic that can be passed from parent to offspring

a)

heterozygous

b)

homozygous

c)

trait

d)

allele

14.

A different form of a gene

a)

allele

b)

trait

c)

gene

d)

recessive

15.

An organism's genetic makeup (consisting of 2 alleles), represented as letters (Yy or YY) is called the

a)

genotype

b)

phenotype

c)

gene

d)

allele

16.

An organism's physical appearance, as determined by its genotype (TT = tall or tt = short) is called the

a)

allele

b)

genotype

c)

phenotype

d)

trait

17.

When gametes from two different plants are united through fertilization is called

a)

cross-fertilization

b)

self-pollination

c)

Law of Segregation

d)

zygote

18.

When gametes from the same plant are united through fertilization is called

a)

cross-fertilization

b)

self-pollination

c)

Law of Segregation

d)

zygote

19.

In pea plants, short plants (t) are recessive to tall plants (T). Which of the following genotypes would result in a tall plant? Check all that apply.

a)

TT

b)

Tt

c)

tt

d)

RR

20.

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following genotypes would result in a wrinkled plant? Check all that apply.

a)

RR

b)

Tt

c)

rr

d)

Rr