Probability

Aa, DD, Bb, and yy are all examples of

• genotypes
• phenotypes

AA and Aa always show up as

• dominant
• recessive

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 genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

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 characteristics is a lion's offspring not going to inherit?

• fur color
• length of tail
• scars on leg
• body size

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Aa is

• homozygous
• heterozygous

aa always shows up as

• dominant
• recessive