8th Grade Science W.I.N Time L.8.2B.23 - 1/08/2025

Consider the genetic cross for fur color. What is the probability that the offspring of this cross will have black fur?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Do you forget things? Absent-mindedness is an inherited recessive trait. The Punnett square shows the genetic cross for absent-mindedness in the Smith family. If the Smith's have six children, how many could be absent-minded?

• 0

• 1

• 2

• 3

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In a field of sunflower plants, 776 plants are tall and 224 plants are short. Sunflower height follows the normal pattern of inheritance. Dominant traits mask recessive. Tall (T) is dominant and short (t) is recessive. What is the genotype of the short plants in the field?

• T

• TT

• Tt

• tt

Tags

NGSS.HS-LS3-1

A population of rabbits follows the typical pattern of inheritance and the law of dominance for fur color. B is the allele for black fur and b is the allele for white fur. In a population of rabbits, 120 bunnies are born. How many bunnies should be black, according to the Punnett square?

• 60

• 85

• 90

• 100

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In a population of weasels, black (R) is the dominant color and white (W) is the other dominant trait. In weasels, fur color follows a pattern of codominance. The heterozygous genotype produces black and white spotted weasels. Consider the genetic cross shown in Punnett square. If there are 60 baby weasels born as a result of the cross, how many should be spotted?

• 15

• 20

• 30

• 60

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A population of rabbits follows the typical pattern of inheritance and the law of dominance for fur color. B is the allele for brown fur and b is the allele for white fur. In a population of rabbits, 160 bunnies are born. How many bunnies should be white, according to the Punnett square?

• 40

• 60

• 80

• 100

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In a population of weasels, black (B) and white (W) are co-dominant traits. The heterozygous genotype produces black and white spotted weasels. Consider the genetic cross shown in Punnett square. If there are 40 baby weasels born as a result of the cross, how many should be black?

• 0

• 5

• 10

• 20

Tags

NGSS.HS-LS3-3

Freckles are a dominant trait in humans. Both of the girls have the genotype FF for freckles. If either one marries a man with no freckles, what are the chances that their children will have freckles?

• 0 %

• 50 %

• 75 %

• 100 %

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This black dog has the genotype of BB for fur color. The black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. What is the probability that this match will produce puppies that are also white?

• 0%

• 25%

• 40%

• 50%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb. If two brown rabbits, with the genotypes seen in the Punnett square above, have baby rabbits, what is the probability that the baby rabbits will also be brown?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3