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Genétics vocab

Total questions: 18

Worksheet time: 39mins

Name
Class
Date
1.

What is the difference between homozygous dominant and heterozygous?

a)

Homozygous dominant has two dominant alleles for a particular gene, while heterozygous has one dominant and one recessive allele.

b)

Heterozygous has two dominant alleles for a particular gene

c)

Homozygous dominant has two recessive alleles for a particular gene

d)

Homozygous dominant has one dominant and one recessive allele

2.

What is the phenotype of an organism with a heterozygous genotype?

a)

Invisible traits

b)

No physical expression

c)

Physical expression of the dominant allele

d)

Physical expression of the recessive allele

3.

If an organism has two recessive alleles for a particular trait, what is its genotype?

a)

Homozygous recessive

b)

Incomplete dominance

c)

Heterozygous dominant

d)

Homozygous dominant

4.

What is the genotype of an organism with one dominant allele and one recessive allele for a particular trait?

a)

Heterozygous

b)

Homozygous dominant

c)

Homozygous recessive

d)

Incomplete dominance

5.

What is the phenotype of an organism with a homozygous recessive genotype?

a)

Recessive trait

b)

Dominant trait

c)

No visible traits

d)

Heterozygous genotype

6.

A dog's soft fur an example of a....

a)

Genotype

b)

Phenotype

7.

The genotype TT is considered to be....

a)

Homozygous dominant

b)

Heterozygous

c)

Homozygous recessive

8.

If red color is dominant in flowers, what would a homozygous dominant flower's genotype look like?

a)

RR

b)

Rr

c)

rr

9.

If red color is dominant in flowers, what would a heterozygous flower's genotype look like?

a)

RR

b)

Rr

c)

rr

10.

If white color is recessive in flowers, what would a homozygous recessive flower's genotype look like?

a)

RR

b)

Rr

c)

rr

11.

Hairy is dominant to hairless. A guinea pig who is hairless will have the genotype of?

a)

HH

b)

Hh

c)

hh

d)

HH or Hh

12.

Hairy is dominant to hairless. A guinea pig who is hairy will have the genotype of?

a)

HH

b)

Hh

c)

hh

d)

HH or Hh

13.
The expression or the actual physical characteristics are known as _________.
a)
Phenotypes
b)
Genotypes
c)
Alleles
d)
DNA molecules
14.
The exact pairing of the alleles such as BB, bb, or Bb are known as _________.
a)
Phenotypes
b)
Genotypes
c)
Proteins
d)
Genes
15.
An example of an heterozygous allele combination is 
a)
Aa
b)
BB
c)
ff
d)
ZZ
16.
An example of a homozygous dominate allele combination is _____________.
a)
HH
b)
hh
c)
Hh
d)
zz
17.
What is the phenotype of a bird which the genotype Bb?  
B-blue  b-red
a)
blue
b)
red
18.

Which statement below describes DOMINANT alleles?

a)

expressed when at least one is present

b)

only expressed when 2 are present