Genetics

Which of the following alleles is homozygous (purebred) recessive?

• Tt

• tt

• TT

• t

Which of the following is a phenotype?

• Aa

• red hair

• heterozygous genes

• mutated DNA

Aa is

• homozygous (purebred)

• heterozygous (hybrid)

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive

• dominant

• lower case letter

• both 

G = green, g = yellow
The genotype for a yellow plant is...

• GG

• Gg

• gg

• all of the choices result in yellow

Who is considered the "father of genetics"?

• Gregor Mendel

• Reginald Punnett

• James Watson

• Justin Bieber

T = tall an t = short
What is the phenotype for Tt?

• short

• tall

• medium sized

• neither tall or short

How many alleles (letters) do each person carry for a trait?

• 1

• 2

• 3

• 4

Which of the following is homozygous dominant?

• Yy

• Y

• yy

• YY

In a Punnett square each box represents a(n)....

• offspring

• parent

• gene

• trait