Genetics Probability

In bears, (F) is the dominant allele for brown fur and (f) is the recessive allele. If a heterozygous male bear is crossed with homozygous recessive female, What would be the probability of their cubs having white fur? Use a punnett to answer this question.

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In plants, tall stems (S) are  dominant to short stems (s). Create a punnett square to perform the following cross: Ss x Ss. What is the probability of producing short stem plants?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The results from a Punnett square can be used to find the ______________ that a certain allele combination will occur in offspring.

• Probability
• Pedigree
• Traits
• Genes

Tags

NGSS.HS-LS3-3

Two homozygous dominant brown eyed parents (BB) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What are the possible genotypes for a cross between two people that are heterozygous for the same trait?

• TT = 25% Tt= 50% tt=25%
• All tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-3

In insects, having two legs is the dominant trait and having 4 legs is the recessive. If you make a cross between insects that are
Gg x GG 
What percent of offspring will be homozygous dominant?
What percent of offspring will be heterozygous?
What percent of the offspring will be homozygous recessive?

• 75% heterozygous, 50% homozygous dominant, 10% homozygous recessive 
• They will ALL be homozygous dominant
• 50% two legs and 25 % 4 legs 
• 50% Homozygous dominant, 50% heterozygous and 0% homozygous recessive.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Ms. Reyes asked Aaron to describe his phenotype. What should he describe based on her question?

• His genes
• His physical traits
• His age
• His grades

Jen is teaching her sister about important molecules in the body.  She tells her sister that one molecule provides a set of instructions that determines characteristics, such as eye color or hair color.  Which molecule is Jen describing?

• Glucose
• Protein
• DNA 
• Gamete

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

A person heterozygous for wet earwax (Ww) mates with a person homozygous recessive for dry earwax (ww). What is the chance of their baby having a heterozygous genotype?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

A white flowered plant is crossed with a plant heterozygous for the trait. What is the probability the offspring can be purple flowers

• 2 out of 4 chance 
• 1 out of 4 chance 
• 0 out of 4
• 4 out of 4 chance

Tags

NGSS.HS-LS4-3