Unit 4 - Predicting Offspring's Traits

Someone whose genotype is Bb has a ____% chance of passing on the recessive allele to her offspring.

• 0%

• 50%

• 100%

Someone whose genotype is bb has a ____% chance of passing on the recessive allele to his offspring.

• 0%

• 50%

• 100%

A heterozygous genotype

• someone whose two alleles for a trait give different 'instructions' (ex: for eye color, one allele codes for brown eyes and one codes allele for blue eyes)

• someone whose two alleles for a trait give the same 'instructions' (ex: for eye color, both alleles code for brown eyes)

A homozygous genotype

• someone whose two alleles for a trait give different 'instructions' (ex: for eye color, one allele codes for brown eyes and one codes allele for blue eyes)

• someone whose two alleles for a trait give the same 'instructions' (ex: for eye color, both alleles code for brown eyes)

A heterozygous genotype

• hh

• Hh

• HH

A homozygous recessive genotype

• hh

• Hh

• HH

A homozygous dominant genotype

• hh

• Hh

• HH

Brown hair is dominant. Red hair is recessive. What's the phenotype of someone who is homozygous dominant for hair color?

• red hair

• brown hair

Brown hair is dominant. Red hair is recessive. What's the phenotype of someone who is homozygous recessive for hair color?

• red hair

• brown hair

Brown hair is dominant. Red hair is recessive. What's the phenotype of someone who is heterozygous for hair color?

• red hair

• brown hair