Genetics

Which combination of sex chromosomes results in a male human being?

• xy

• yy

• xx

• either xx or yy

Factors that control traits are called...

• traits

• genes

• alleles

• phenotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is a karyotype?

• a picture of the chromosome in an individual

• blood from a newborn baby

• a picture of a baby before it is born

• fluid that surrounds a baby before it is born

Tags

NGSS.HS-LS3-1

If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur?

• 25%

• 0%

• 50%

• 100%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What must occur for a girl to be colorblind?

• Each parent must have two codominant all colorblindness.

• Each parent must have the dominant allele for colorblindess.

• Each parent must be colorblind.

• Each parent must have the recessive allele colorblindness.

Tags

NGSS.HS-LS3-1

In Mendel's experiments, how often did the "missing" trait from the F1 generation show back up in the F2 generation?

• 25% (1/4)

• 50% (2/4)

• 100% (4/4)

• 0% (0/4)

What is a pedigree?

• a picture of all the chromosomes in a cell

• an allele passed from parents to offspring

• a geneticist who studies the inheritance of trait

• a chart that tracks which members of a family have a particular trait.

A carrier is a person who has

• two dominant alleles for a trait

• one recessive and one dominant allele for a trait

• more than two alleles for a trait

• two recessive alleles for a trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the main job of meiosis?

• to make new, identical cells

• to make cells with twice the number of chromosomes

• to divide the cell

• to make cells with half the number of chromosomes

Tags

NGSS.HS-LS3-2

Why are sex linked traits more common in males than in females?

• All alleles on the X chromosome are dominant

• Any allele on the Y chromosome will be codominant with the one on the X

• All alleles on the Y chromosome are recessive

• A recessive allele on the X chromosome will produce the trait in the males.