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Worksheets

Genetics Vocab & Monohybrid Crosses

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.

Another word for "pure"

a)

neutral

b)

heterozygous

c)

dominant

d)

homozygous

2.

Trait that is expressed (shows up) in a hybrid

a)

recessive trait

b)

pure trait

c)

dominant trait

d)

haploid trait

3.

Form of a gene

a)

allele

b)

chromosome

c)

heterozygote

d)

diploid

4.

Segment of DNA that codes for a trait

a)

chromosome

b)

gene

c)

phenotype

d)

recessive

5.

Father of Genetics

a)

Darwin

b)

Watson

c)

Franklin

d)

Mendel

6.

Physical appearance of an individual

a)

genotype

b)

phenotype

c)

recessive

d)

dominant

7.

BB, Bb, and bb are examples of this

a)

genotypes

b)

phenotypes

c)

chromosomes

d)

probabilities

8.

Another word for "hybrid"

a)

heterozygous

b)

genotype

c)

recessive

d)

homozygous

9.

According to the Punnett square, which phenotype is dominant?

a)

BB

b)

purple

c)

bb

d)

white

10.

What is the genotypic ratio for this cross?

a)

1:1:1:1

b)

3:1

c)

1:2:1

d)

2:2:1

11.

A plant with Aa alleles for height is

a)

heterozygous dominant

b)

homozygous dominant

c)

homozygous recessive

d)

pure

12.

If yellow seeds are dominant to green seeds, what is the probability that a cross between two plants with green seeds will produce a plant with yellow seeds?

a)

100%

b)

75%

c)

50%

d)

0%

13.

What is the phenotypic ratio of the offspring?

a)

1:2:1

b)

3:1

c)

2:2

d)

2:2:1:1

14.

If two tongue rolling parents produce a non-rolling child, which of the following is true?

a)

parents must really be non-rollers

b)

tongue-rolling is recessive

c)

the parents are hybrids

d)

tongue-rolling is controlled my multiple genes

15.

What kind of dog is this?

a)

beagle

b)

Bassett hound

c)

bloodhound

d)

blue heeler

16.

A segment of DNA that codes for a trait

a)

chromosome

b)

gene

c)

genotype

d)

dominant

17.

Tightly wound, dense bundles of DNA

a)

genotype

b)

phenotype

c)

homozygous

d)

chromosomes

18.

Genotype of a hybrid

a)

AA

b)

Bb

c)

cc

d)

rr