What type of sex chromosome will be contained by the sex cells of a female giraffe?

A.
X chromosome only

B.
Y chromosome only

C.
X and Y chromosomes

D.
egg cells do not contain sex chromosomes
A pea plant is heterozygous for height (Tt). Which allele will be carried by a pollen grain produced by the plant?

A.
T only

B.
t only

C.
T and t

D.
T or t
Which term describes the example below?

A white cat has a mother that is homozygous dominant and a father that is homozygous recessive.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A rabbit’s cells have two sex chromosomes that are different.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A child with no freckles has a mother who has freckles and is heterozygous and a father who has no freckles and is homozygous recessive.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A child with a widow’s peak has a mother who is homozygous dominant for a widow’s peak and a father who is homozygous dominant for a widow’s peak.

A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A puppy’s cells have two sex chromosomes that are the same.

A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male