Question 1

Which of the following best describes a somatic mutation?

Accepted Answer

A mutation that occurs in non-reproductive cells and is not passed to offspring.

Question 2

In a population of fish, a mutation occurs in a germ cell. What is the most likely outcome?

Accepted Answer

The mutation can be passed on to the offspring and affect future generations.

Question 3

Which statement correctly distinguishes between autosomes and sex chromosomes?

Accepted Answer

Autosomes are chromosomes that do not determine sex, while sex chromosomes are involved in sex determination.

Question 4

A mutation in a plant's somatic cell can sometimes end up in the gametes. Why is this possible in plants but not in animals?

Accepted Answer

Plants have somatic cells that can de-differentiate and become gametes, unlike animals.

Question 5

Which of the following equations represents the probability $$P$$ that a mutation in a germ cell will be inherited by the next generation, assuming random mating and no selection?

Accepted Answer

$$P = \frac{1}{2}$$

Question 6

If a mutation occurs on an autosome, which of the following is true?

Accepted Answer

It can affect both males and females equally.

Question 7

A geneticist observes a mutation in the sex chromosome of a male fish. Which of the following is a possible consequence?

Accepted Answer

The mutation may affect traits related to sex determination or reproduction.

Question 8

Which of the following best explains why mutations in somatic cells are not inherited in animals?

Accepted Answer

Somatic cells do not contribute genetic material to gametes in animals.

Question 9

A mutation occurs in the sex chromosome of a female plant. What is a possible outcome?

Accepted Answer

The mutation may be passed to offspring if the affected cell becomes a gamete.

Question 10

Which of the following scenarios illustrates a multi-step process involving both cell type and chromosome type mutations?

Accepted Answer

A mutation occurs in a germ cell on an autosome, is passed to offspring, and results in a genetic disorder affecting both sexes.

Question 11

Which term refers to the type of cell that gives rise to gametes?

Accepted Answer

Germ cell

Question 12

If a mutation is found in all cells of an organism, which of the following is the most likely explanation?

Accepted Answer

The mutation occurred in the zygote or early embryonic development.

Question 13

Which of the following is NOT a correct distinction between autosomes and sex chromosomes?

Accepted Answer

Autosomes are only found in germ cells, while sex chromosomes are only found in somatic cells.

Question 14

A mutation in a plant's root cell is observed to later appear in its seeds. What genetic principle does this illustrate?

Accepted Answer

Somatic cells in plants can become gametes, allowing somatic mutations to be inherited.

Question 15

Which of the following is true regarding the inheritance of mutations in animals?

Accepted Answer

Only mutations in germ cells can be inherited by offspring.

Question 16

A scientist is studying a genetic disorder that affects both males and females equally. Which chromosome type is most likely involved?

Accepted Answer

Autosome

Question 17

Which equation best represents the total number of autosomes in a human somatic cell?

Accepted Answer

$$N = 2 	imes 22 = 44$$

Question 18

A mutation is found only in the sex chromosomes of a population. Which of the following is a possible effect?

Accepted Answer

The mutation may cause sex-specific traits or disorders.

Question 19

Which of the following best describes the difference between autosomes and sex cells?

Accepted Answer

Autosomes are chromosomes, while sex cells are types of cells (gametes).

Question 20

In a genetic cross, a mutation on the X chromosome is inherited by a male offspring. Which of the following is true?

Accepted Answer

The male will express the mutation if it is recessive and not present on the Y chromosome.

Classification of Mutations: Cell Type and Chromosome Type

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