Biology sem 1 wk 3

What is the genotype of a woman with red-green color blindness?

• X^b X^b

• X^B X^B

• X^B X^b

• X^b Y

Tags

NGSS.HS-LS3-1

Which defines an organism that is homozygous for a trait?

• has two different alleles for a trait

• has two different genes for a trait

• has two of the same alleles for a trait

• has two of the same genes for a trait

What is the effect of sickle-cell anemia?

• inefficient oxygen transportation

• blocked respiratory pathways

• decreased neurological functions

• susceptibility to contracting malaria

Which is the ratio of pea plant offspring with recessive green seeds if both parents are hybrids?

• 1:1

• 1:2

• 1:4

• 1:8

Tags

NGSS.HS-LS3-1

Which of the following causes genetic recombination?

• allels

• crossing over

• segregation

• hybridization

Tags

NGSS.HS-LS3-2

The process of breeding closely-related organisms to eliminate undesirable traits in future generations is called __.

• inbreeding

• crossing over

• segregation

• gene splicing

A person who is a heterozygous for albinism is called a(n) __.

• DNA

• allel

• producer

• carrier

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An intermediate heterozygous phenotype between two homozygous phenotypes is called .

• complete

• dominant

• recessive

• allel

The possibility for either green or yellow seeds in pea plants is an example of possible __.

• allels

• mutations

• segregation

• complete

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Breeding a dog that has a good sense of smell with another dog that will retrieve game birds to produce offspring with both desirable traits is an example of __.

• segregation

• gene splicing

• inbreeding

• hybridization

Tags

NGSS.HS-LS3-2