Allele

Two different alleles for the same trait.

• Heterozygous

• Homonzygous

• Dominant

Tags

NGSS.HS-LS3-2

Two identical alleles for the same trait.

• Heterozygous

• Homozygous

• Dominant

The Alleles Bb are

• Homozygous

• Heterozygous

• Homozygous Dominant

Which is Heterozygous?

• Tt

• BB

• ff

• Dominant

Someone steps on some bugs and randomly removes their alleles from the population. This is an example of

• gene flow

• genetic drift

• speciation

• allele frequency

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

A drastic reduction in the size of a population that can change allele frequencies is called

• the bottleneck effect

• the founder effect

• the gene flow effect

• the Thanos effect

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

The allele frequencies of the mouse population in the picture are changing over time. Which is true?

• The population is evolving.

• The population is not evolving.

• The population will go extinct.

• The population's genetic variation is increasing.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

What is an allele?

• A variant form of a gene

• A type of cell

• A protein

• A chromosome

Tags

NGSS.HS-LS3-2

Which of the following represents a homozygous recessive genotype?

• AA

• Aa

• aa

• aA

In a monohybrid cross, what is the expected phenotypic ratio of the offspring if both parents are heterozygous?

• 1:2:1

• 3:1

• 9:3:3:1

• 1:1