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