Genetics and Punnett Square Review

Study the Punnett Square. What is the probability of a dominant trait showing up?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

Study the Punnett Square. What is the probability of having heterozygous dominant traits?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS4-3

Who was Gregor Mendel?

• A famous physicist.

• The astronomer who discovered Pluto.

• A priest considered the Father of Genetics.

• A biologist who discovered viruses.

Tags

NGSS.HS-LS3-2

On Mars, it is preferable to have dominant green skin (G) versus red skin (g). A male with heterozygous alleles will have a little Martian with a female that has red skin. Draw a Punnet Square to show their probability for having a green-skinned Martian and then choose the correct answer.

• They will have a 100% to have a green-skinned Martian because the dominant allele will mask the red allele.

• There is 0% chance to have a green-skinned Martian because you need two recessive genes to get the dominant trait.

• There is a 50% chance to have a green-skinned Martian.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In alleles, capital letters show:

• Recessive traits.

• Dominant traits.

Homozygous means:

• Different alleles. Ex: Tt

• Same alleles. Ex: tt

Heterozygous means:

• Same alleles. Ex: TT

• Different alleles. Ex: Tt

What is true about genotypes?

• Genotypes are the traits that show up.

• Genotypes are the gene combinations.

Tags

NGSS.HS-LS3-2

What did Mendel use for his experiments?

• Planets.

• Lemon trees.

• Pea plants.

• Humans.

What was Mendel's big discovery?

• Traits are Not passed on to offspring.

• Traits can be masked in one generation and show up in a future generation.

• Pea plants have flowers.

• Pea plants produce peas.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2