Extending Mendelian Genetics

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt

• Tt

• Bb

• TT

B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

What genotype would go in box 2?

• BB

• Bb

• bb

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is homozygous dominant?

• RR

• round

• Rr

• wrinkled

• rr

What is the name for a cross that examines the inheritance of two traits?

• incomplete dominance

• codominance

• monohybrid

• dihybrid

The ability to taste the chemical PTC is due to a single gene in humans. Tasters carry the dominant allele T and nontasters carry the recessive allele t. Imagine two heterozygotes have a large family. The phenotypic ratio for tasters:nontasters in their children is __________.

• 9:3:3:1

• 1:1

• 3:1

• 1:2:1

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Having two of the same alleles for a trait (sometimes called purebred) is known as ____________.

• homozygous

• hetrozygous

• protein

• chromosome

Black hair color is dominant to white hair color in mice. Determine the phenotypic ratio for the offpring of a heterozygous black mouse and a white mouse.

• 4 Black: 0 White

• 3 Black: 1 White

• 2 Black: 2 White

• 0 Black: 4 White

In humans, having freckles (F) is dominant to not having freckles (f). Two people with freckles get married and give birth to three children. Two of the kids have freckles and one does not. Both parents must have which genotype?

• FF

• Ff

• ff

What term refers to mixture or blending of two traits?

• Codominance

• Non-dominance

• Complete dominance

• Incomplete dominance