EOC SB3a. Mendel's Law

Last updated 2 months ago

10 questions

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

In the Punnett square above, the parents each give one allele to offspring. This is an example of Mendel's Law of

Law of Segregation

Dominance

Independent Assortment

During gamete formation, genes for different traits on different chromosomes separate without influencing each other’s inheritance. This statement best describes the...

Law of Segregation

Law of Independent Assortment

Law of Probabilities

Law of Dominance

Suppose a male dog has the genotype BBgg, which of the following is true regarding the alleles found in his sperm?

They all carry BG

They all carry Bg

Some carry B's, some carry g's

Some carry b's, some carry G's

Cystic fibrosis causes a buildup of mucus in the lungs. An individual can be a carrier of Cystic Fibrosis and have no idea. If one parent has cystic fibrosis (CF) and the other is not and is not a carrier, none of the children will have CF. This demonstrates Mendel's law of

Dominance

Segregation

Independent assortment

In the 1860s Gregor Mendel performed numerous dihybrid crosses between pea plants. Dihybrid crosses involve the study of the inheritance patterns related to two different traits. In guinea pigs the allele for black fur (B) is dominant over the allele for brown fur (b), and the allele for short fur (F) is dominant over the allele for long fur (f). What percentage of the offspring from a BbFf x bbff cross would be expected to be heterozygous for both traits?

50%

25%

100%

0%

3 Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?

75% hairy stems: 25% hairless stems

50% hairy stems: 50% hairless stems

100% hairy stems

100% hairless stems

In 1917 the biologist Thomas Hunt Morgan conducted studies in which he kept some caterpillars in the dark and placed some others under red, green, or blue lights. Exposure to red light produced butterflies with brightly colored wings. Exposure to green light resulted in dark-colored wings. Exposure to blue light or no light resulted in pale-colored wings. What was the most likely conclusion of Morgan’s research?

The pigment in butterfly wings absorbs light from the environment.

Caterpillars exposed to red and green light are healthier than caterpillars exposed to no light or blue light.

The genes regulating wing color in butterflies are influenced by environmental factors.

The phenotypic expression of wing shape depends on color pigmentation in butterflies.

All the genetic information necessary for the growth and development in a sexually reproducing animal is present in

egg cells only

either sperm or egg cells

sperm cells only 

zygotes

Which three processes usually result in the greatest variety of possible gene combinations?

differentiation, mutation, and fertilization

cloning, meiosis, and fertilization

 mutation, meiosis, and fertilization

differentiation, mitosis, and fertilization

In pea plants, purple is dominant to white. A heterozygous purple plant is crossed with a white plant. Drag the alleles to the appropriate spot in the Punnett square.

Other Answer Choices:

p

P

Pp

PP

pp

In the Punnett square above, the parents each give one allele to offspring. This is an example of Mendel's Law of 

Law of Segregation

Dominance

Independent Assortment

During gamete formation, genes for different traits on different chromosomes separate without influencing each other’s inheritance. This statement best describes the...

Law of Segregation

Law of Independent Assortment

Law of Probabilities

Law of Dominance

Suppose a male dog has the genotype BBgg, which of the following is true regarding the alleles found in his sperm?

They all carry BG

They all carry Bg

Some carry B's, some carry g's

Some carry b's, some carry G's

Cystic fibrosis causes a buildup of mucus in the lungs. An individual can be a carrier of Cystic Fibrosis and have no idea. If one parent has cystic fibrosis (CF) and the other is not and is not a carrier, none of the children will have CF. This demonstrates Mendel's law of 

Dominance

Segregation

Independent assortment

In the 1860s Gregor Mendel performed numerous dihybrid crosses between pea plants. Dihybrid crosses involve the study of the inheritance patterns related to two different traits. In guinea pigs the allele for black fur (B) is dominant over the allele for brown fur (b), and the allele for short fur (F) is dominant over the allele for long fur (f). What percentage of the offspring from a BbFf x bbff cross would be expected to be heterozygous for both traits?

50%

25%

100%

0%

3 Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?

75% hairy stems: 25% hairless stems

50% hairy stems: 50% hairless stems

100% hairy stems

100% hairless stems

In 1917 the biologist Thomas Hunt Morgan conducted studies in which he kept some caterpillars in the dark and placed some others under red, green, or blue lights. Exposure to red light produced butterflies with brightly colored wings. Exposure to green light resulted in dark-colored wings. Exposure to blue light or no light resulted in pale-colored wings. What was the most likely conclusion of Morgan’s research?

The pigment in butterfly wings absorbs light from the environment.

Caterpillars exposed to red and green light are healthier than caterpillars exposed to no light or blue light.

The genes regulating wing color in butterflies are influenced by environmental factors.

The phenotypic expression of wing shape depends on color pigmentation in butterflies.

All the genetic information necessary for the growth and development in a sexually reproducing animal is present in

egg cells only

either sperm or egg cells

sperm cells only 

zygotes

Which three processes usually result in the greatest variety of possible gene combinations?

differentiation, mutation, and fertilization

cloning, meiosis, and fertilization

 mutation, meiosis, and fertilization

differentiation, mitosis, and fertilization