Unit 4 (Part2) Genetics Review

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

If B = brown hair and b = blonde hair, what is the probability of brown hair?

• 25%
• 50%
• 0%
• 75%

In certain species of plants, purple flowers (P) are dominant to white flowers (p). If two heterozygous plants are crossed, what will be the phenotype of the offspring?

• 100% purple flowers
• 100% white flowers
• 75% white flowers, 25% purple flowers
• 25% white flowers, 75% purple flowers

How many individuals are there in the 3rd generation?

• 2
• 3
• 4
• 6

Give the genotype for person III-3

• GG
• Gg
• gg

Give the genotype for person II-1

• GG
• Gg
• gg

What does a filled in square represent?

• Not affected Female
• Not affected Male
• Affected Male
• Affected Female

How many kids did the mother and father from the first generation have?

• 2
• 4
• 5
• 6

This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?

• 8
• 5
• 2
• 3