Unit 10 Lesson 1 - Genotypes and Phenotypes

Which of the following shows a homozygous genotype? (select all that apply)

• Aa

• aa

• AA

Which of the following shows a heterozygous genotype?

• Aa

• aa

• AA

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is an allele?

• A type of gene

• A variant form of a gene

• A type of chromosome

• A mutation in a gene

Tags

NGSS.HS-LS3-2

How are alleles inherited?

• From the mother only

• From the father only

• From both parents

• Randomly from the environment

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If red color is dominant in flowers, what would a heterozygous flower's genotype look like?

• RR

• Rr

• rr

Tags

NGSS.HS-LS3-1

The flower petals are white.

• genotype

• phenotype

The parents were both homozygous for feather color.

• genotype

• phenotype

Tags

NGSS.HS-LS3-1

If a pea plant's genotype is "yy", what can we infer about its phenotype? (Y = yellow, y = green, T = tall, t = short)

• It will have yellow seeds.

• It will have green seeds.

• It will be tall.

• It will be short.

Tags

NGSS.HS-LS3-2

A chicken that is homozygous for black feathers (BB) mates with a chicken that is homozygous for white feathers (bb). All of their offspring have black feathers. What is the genotype of the offspring?

• BB

• Bb

• bb

• black feathers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2