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Intro to Genetics Vocab Quiz

Total questions: 20

Worksheet time: 3600secs

Name
Class
Date
1.

Two different alleles for the same trait.

a)

Heterozygous

b)

Homonzygous

c)

Dominant

2.

Two identical alleles for the same trait.

a)

Heterozygous

b)

Homozygous

c)

Dominant

3.

Physical characteristics, or visible traits of an organism

a)

phenotype

b)

genotype

c)

trait

4.

Study of how traits are inherited

a)

Traits

b)

Genetics

c)

DNA

5.

Genetic letters/Makeup of an organism

a)

Genotype

b)

Allele

c)

Phenotype

6.

A trait that overpowers the other trait.

a)

Hybrid

b)

Dominant

c)

Recessive

7.

The Alleles bb are

a)

Heterozygous

b)

Homozygous Dominant

c)

Homozygous Recessive

8.

The allelles BB are

a)

Heterozygous

b)

Homozygous Recessive

c)

Homozygous Dominant

9.

The Alleles Bb are

a)

Homozygous

b)

Heterozygous

c)

Homozygous Dominant

10.

Which of the following is a Phenotype?

a)

Bb

b)

Brown Eyes

11.

The allele that is weaker and will not show if a dominant allele is present

a)

Dominant

b)

Recessive

c)

Traits

12.

Which of the following is an example of Genotype?

a)

Tt

b)

Tall

13.

WHY are there 2 alleles for 1 trait?

a)

Because you inherit 1 from each parent

b)

Because when the DNA replicates, it makes a second copy of the allele

c)

Because when cells undergo mitosis, they make 2 alleles as they make 2 alleles

d)

Because you have 2 phenotypes for every trait

14.

Brown eyes (B) are dominant to blue eyes (b). What is your phenotype if your genotype for eye color is BB?

a)

Brown eyes

b)

Blue eyes

15.

Brown eyes (B) are dominant to blue eyes (b). What is your phenotype if your genotype for eye color is Bb?

a)

Brown eyes

b)

Blue eyes

16.

Which of the following correctly identifies the structures?

a)

Homologous Chromosomes

b)

Duplicated Genes

c)

Replicated DNA

d)

Identical Cells

17.

How many chromosomes do you have in EACH cell?

a)

2

b)

10

c)

23

d)

46

18.
A ____________ is a piece of DNA that codes for a trait
a)
Allele
b)
Gene 
c)
Dominant Trait 
d)
Recessive Trait 
19.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
20.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele