Traits/Genes/Heredity Quiz

The study of ____ is called genetics.

• mutations

• heredity

Gregor Mendel studied heredity using ____ plants.

• pea

• fern

Mendel concluded that _____ factors control each inherited trait.

• 2

• 3

Genes are found in chromosomes and we receive one of each gene from our parents.

• True

• False

Mendel thought the purple factor was the only factor seen because it _____ the white factor.

• emphasizes

• blocks

In a Punnett square, a lowercase letter stands for a ____ allele.

• recessive

• dominant

In a Punnett square, a capital letter stands for a ____ allele.

• recessive

• dominant

Of the following, which represents a homozygous recessive genotype?

• tt

• TT

A and B are the same kind of fish. A has a genotype for narrow fins (ww), and B has a genotype for wide fins (W-). Which of the following genotypes of parent fish will produce only offspring having wide fins?

• WW and Ww

• Ww and ww

Kari has two pet rats with black fur. When her rats mated, one of their four offspring had white fur, and the other three had black fur. Which is most likely true for Kari's rats?

• Both parents are heterozygous for the white-fur trait, which is dominant.

• Both parents are heterozygous for the white-fur trait, which is recessive.