Genetics Probability

The gene for round peas (R) in a pea plant is dominant over the gene for wrinkled peas (r). In a cross between one heterozygous parent and one homozygous wrinkled pea parent, we can predict that what percentage of the offspring will have round peas?

• 100%

• 50%

• 75%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

The gene for tallness (T) in a pea plant is dominant over the gene for shortness (t). In a cross between two heterozygous parent pea plants, we can predict that what percentage of the offspring will be tall?

• 100%

• 50%

• 75%

• 25%

Tags

NGSS.HS-LS3-1

In mice, agouti coloration (A) is a dominant trait for fur color over black fur (a). A Punnett square diagram is provided. A particular generation of offspring has a ratio of three agouti individuals to one black individual. Which of the following genotype combinations is possible for the parent generation?

• aa x aa

• AA x Aa

• Aa x Aa

• AA x AA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a certain breed of dogs, brown fur (B) is a dominant trait over yellow fur (b). Gregory owns a brown female. She produced a litter of offspring that includes two brown and two yellow puppies. The only thing Gregory knows about the male is that he was of the same breed. Which of the following represents the genotype combinations that are possible for Gregory’s dog and the father of this litter of puppies?

• Mother = BB x Father = bb

• Mother = BB x Father = Bb

• Mother = Bb x Father = Bb

• Mother = Bb x Father = bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Females-XX; MalesXY.  A couple has 4 girls.  What is the chance the next child will be a boy? (S7L3. a)

• 75%

• 100%

• 25%

• 50%

Tags

NGSS.HS-LS3-3

Females-XX; MalesXY.  A couple has 4 girls.  What is the chance the next child will be a boy?

• 75%

• 100%

• 25%

• 50%

Tags

NGSS.HS-LS3-3

The passing of genes from parents to offspring (a)  

• heredity

• Punnett Square

• probability

• genetics

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

what predicts the outcome

• genetic engineering

• punnet square

• probability

Answer explanation

The question asks about what predicts the outcome. Out of the given options, 'Punnet Square' is a diagram that is used to predict the outcome of a particular cross or breeding experiment. It is named after its creator, Reginald Punnett. Thus, 'Punnet Square' is the correct answer.

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Which of the following is the most accurate definition of heredity?

• The storage of information in the nucleus of every cell in the body

• The passage of genetic instructions from one generation to another

• The relationship of one organism to another by evolutionary history

• The adaptation of an organism for better survival in a new habitat

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The diagram shows the pedigree for three generations and the individuals affected by a disease. How many of the individuals shown on this pedigree are affected by the disease?

• 2

• 5

• 6

• 8

Tags

NGSS.HS-LS3-1