AP Biology Genetics

Suppose that in sheep, a dominant allele (B) produce black hair and a recessive allele (b) produce white hair. If you saw a black sheep, you would be able to identify

• its phenotype for hair color
• its genotype for hair color
• the genotype of only one of its parents
• the phenotype of both of its parents

Tags

NGSS.HS-LS3-1

One of the main reasons genes assort independent of one another  is that 

• they produce unrelated traits
• they produce related traits
• they are on the same chromosome
• they are on different chromosomes.

Tags

NGSS.HS-LS3-1

A single gene has 3 or more alternative forms. These are called

• heterozygotes

• multiple alleles

• epistatic

• polygenic

A child has type O blood, if mother has type A blood, what could the fathers blood type be

• A,B, or O

• AB or A

• AB or B

• O only

Tags

NGSS.HS-LS3-1

In mice, the homozygous mice are black and white. The heterozygous mice are gray. What pattern of inheritance is expressed in fur color in mice?

• complete dominance and recessiveness
• co-dominance
• incomplete dominance
• pleiotropy

Tags

NGSS.HS-LS3-1

If the parents of a cross are AaBcCc x aaBBcc. What is the probability of an offspring that is homozygous recessive for all 3 traits?

• 1/64

• 1/32

• 1/8

• 0

Tags

NGSS.HS-LS3-3

In humans, if a non-disjunction event leads to an individual that is XXY, they would

• be female because they have 2 X chromosomes
• be male because they have a Y chromosome
• not survive
• have both male and female characteristics

Tags

NGSS.HS-LS3-1

If a female was a carrier for sex-linked color blindness, what percentage of her male children would also be color blind?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Chromosomes that do NOT play a role in determining the sex of an individual are called

• sex chromosomes

• X and Y

• autosomal chromosomes

• A and B are correct

In a sex-linked inheritance pedigree you would expect to see

• more affected females
• all carrier males
• more affected males
• an equal number of affected males and females

Tags

NGSS.HS-LS3-3