Genetics Level

Assume brown eyes (B) are dominant to blue eyes (b), what is true about two brothers that have brown eyes if one has genotype BB the other Bb?

• they have same phenotype and genotype

• they have different genotypes and phenotypes

• they have same phenotype but different genotypes

• they have same genotype but different phenotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?

• 100% Tt
• 50% Tt, 50% tt
• 75%Tt, 25%tt
• 25%TT, 50%Tt, 25%tt

Tags

NGSS.HS-LS3-1

Brown eyes are dominant to blue eyes. If two brown eyed parents (Bb) have a baby. What is the chance the baby will be blue eyed?

• 0 %

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Snapdragons are incompletely dominant for color; they have the phenotypes red, pink, or white. The red and white flowers are homozygous and the pink flowers are heterozygous. If a red and a pink snapdragon were crossed, what percentage of the offspring would be white?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-2

Which of the following could be used to represent a heterozygous yellow pea plant's genotype?

• YY

• yy

• Yy

• Yg

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is a phenotype?

• The expression of a trait; what you see.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

What is the percentage of offspring that have green pods?

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-3

What is the phenotype of the heterozygous parent in the punnett square?

• green

• yellow

• Yy

• yy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2