Genetics Review

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

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

• GG
• Gg
• gg
• all of the choices result in yellow

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

• Tt
• tt
• TT
• t

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr
• R
• RR
• RR or Rr

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

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

• 1
• 2
• 3
• 4

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

In this punnett square, which is the dominant trait?
The B stands for bud.

• purple flower bud
• white flower bud
• dominant
• recessive

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

The study of heredity and the variation of inherited characteristics 

• gene
• genetics 
• meiosis 
• hybrid