X Recessive Traits Punnett

Look at the punnett square. What is the probability of the offspring showing the recessive trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Tags

NGSS.MS-LS4-4

If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

What are the probabilities of the phenotype(s) of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Recessive alleles are represented by a:

• Male gene

• lowercase letter

• dominant trait

• capital letter

In a Punnett square, what do the letters outside the grid represent?

• The phenotypes of the parents

• The genotypes of the parents

• The phenotypes of the offspring

• The genotypes of the offspring

What does a Punnett Square show?

• The actual results of a genetic cross.

• The potential genotypes of the offspring from a genetic cross.

• The physical characteristics of the offspring.

• The dominant alleles in a population.

Using a Punnett square, predict the genotypic ratio of offspring from a cross between two heterozygous plants (Rr x Rr) for a trait where R is dominant over r.

• 1:2:1

• 3:1

• 2:2

• 4:0

Using a Punnett square, predict the genotype ratio of offspring from a cross between two heterozygous plants (Rr x Rr) for a trait where R is dominant over r.

• 1:2:1

• 3:1

• 2:2

• 4:0

In the punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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