Genetics Quiz Review

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

What gender has an X and a Y chromosome?

• male
• female
• transgender 
• all of the above

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

Which of the following is homozygous recessive?

• Tt
• tt
• TT
• T

Which of the following is homozygous dominant?

• Yy
• Y
• yy
• YY

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 

• 0 in 4
• 1 in 4
• 2 in 4
• 4 in 4

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Aa is

• homozygous
• heterozygous