Genetics

Which of the following allele pairs is homozygous recessive?

• RR

• Rr

• rr

Which of the following allele pairs is heterozygous dominant?

• Ff

• ff

• FF

Heterozygous means there is/are............

• 0 copies of the same gene.

• 1 copy of the same gene.

• 2 copies of the same gene.

• 2 copies of genes that are different.

Two parrots have different parents. One has a blue tail and the other does not. Why do the parrots have different colored tails?

• Each parrot has different tail colors because different parents will have different color tails.

• Each parrot has different tail colors because they have different versions of the gene for tail color that connect together to make different tail colors.

• Each parrot has different versions of the gene for tail color. The genes are split inside one parrot and not the other.

• The parrot has different versions of the gene for tail color, this instructs for different proteins that connect in different ways to make different tail colors.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism has how many copies of a gene for each feature?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The organelle where all genetic material is stored containing the codes to make proteins.

• Cell

• Nucleus

• Ribosome

• Protein molecule

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

How many copies of different versions of genes, that provide instructions for one type of protein, do homozygous genes have?

• 0

• 1

• 2

• 3

Which of the following is an example of a homozygous recessive genotype?

• AA

• Aa

• aa

• aA

What is the primary function of DNA in cells?

• To provide energy

• To store genetic information

• To transport proteins

• To digest nutrients

In a monohybrid cross, what is the expected phenotypic ratio of the offspring?

• 1:1

• 3:1

• 9:3:3:1

• 1:2:1