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Worksheets

Genetics

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Genotype refers to the ...

a)

physical expression of the genes

b)

the possible combination of alleles in a gene

c)

whether an allele is dominant or recessive

d)

how an organism will appear

2.

An offspring will receive how many alleles from each parent to determine a specific trait?

a)

one

b)

two

c)

three

d)

four

3.

Which of the following is a phenotype?

a)

BB

b)

Bb

c)

bb

d)

Blue Eyes

4.

What is a phenotype

a)

The genetic make up (code)

b)

BB, Bb, bb

c)

The physical trait

d)

none of the above

5.

having two of the same genes for the trait (sometimes called purebred).

a)

Homozygous

b)

Heterozygous

c)

Chromosome

d)

DNA

6.

An allele whose trait only shows up when no dominant allele is present.

a)

Hidden allele

b)

Recessive allele

c)

Dominant allele

d)

Present allele

7.

Snapdragon flowers come in red, pink and white. What type of inheritance is this?

a)

Complete Dominance

b)

Codeminance

c)

Incomplete Dominance

d)

Polygenic Inheritance

8.

Incomplete dominance means that the traits are

a)

expressed equally

b)

recessive

c)

dominant

d)

blended

9.

Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?

AA x aa

a)

AA

b)

Aa

c)

aa

d)

Brown Fur

10.

If green is dominant over purple, then what is the genotype for this individual?

a)

Purple

b)

Green

c)

GG

d)

gg

11.

If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?

a)

Tall

b)

short

c)

medium

d)

not enough info

12.

Y for yellow body is dominant over y for blue body. What alleles would produce yellow bodies?

a)

YY, Yy

b)

Yy, yy

c)

YY only

d)

YY, yy

13.

The exact genetic makeup of an organism, such as RR, Tt, PP is its?

a)

phenotype

b)

dominance

c)

genotype

d)

trait

14.

What type of "square" helps us solve genetic problems?

a)

carpenter square

b)

punnett square

c)

Mendal square

d)

genetic square

15.

Give me an example of one of your favorite phenotypes.

4 lines