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5.3 Dihybrid Mastery Check

Last updated about 3 hours ago

8 Nsɛmmisa

Ɛhia

1

Ɛhia

1

1

1

1

1

1

1

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

Gregor Mendel discovered that, in pea plants, tall stem height is dominant while short stem height is recessive. Using modern genetics notation, which of the following symbols would most likely be used to represent the genotype of a homozygous dominant plant?

TS

Ss

aa

AA

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

Emperor penguins have a diploid number of 60. How many chromosomes would you expect to find in a gamete from an emperor penguin?

30

120

60

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

During meiosis I in prophase I, homologous chromosomes pair up and exchange genetic material in a process known as crossing over. Each chromosome in a homologous pair carries different alleles (A vs a and B vs b) for the same gene. Which of the following statements best describes the significance of this process in genetic variation?

It guarantees that dominant alleles are passed on to the offspring.

It allows for the mixing of alleles, leading to new combinations of traits in offspring.

It prevents mutations from occurring in the alleles.

It ensures that all offspring will have identical genetic makeup.

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

Luna Lovegood is known for her unique personality and her ability to see Thestrals, magical creatures visible only to those who have witnessed death. Luna’s father can also see Thestrals, but her mother could not. Suppose the ability to see Thestrals is controlled by a dominant allele (T) and the inability to see Thestrals is controlled by a recessive allele (t). Which of the following best explains Luna’s genotype and how she inherited this ability?

Luna’s genotype is TT, and she inherited a dominant allele from both parents.

Luna’s genotype is Tt, and she inherited the dominant allele from her father and the recessive allele from her mother.

Luna’s genotype is tt, and her ability to see Thestrals is due to environmental factors.

Luna’s genotype is Tt, but her ability is entirely based on magical training.

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

Black fur (A) is dominant over white fur (a) in bunnies.

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In this punnet square, two heterozygous parents have a probability of having black-furred offspring.

Mathematically, if the above parents (bunnies) have 20 offspring total, then

RRyy

Rryy

RRYy

rryy

Asemmisa {{asɛmmisaAhyɛnsode}}

7.

What is the correct genotype possibility that belongs in the box in question?

Aabb

aabb

aaBB

AaBb

aaBb

Asemmisa {{asɛmmisaAhyɛnsode}}

8.

If the parents' genotype is GgYY x GgYY, which punnet square is set up correctly with the gametes each parent would provide?

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