A gamete of a domestic cat has 19 chromosomes. A student claims that a body cell of the cat contains 38 chromosomes.

Which of the following best describes the student’s claim?

(1 point)
Responses

The claim is correct because a sperm cell carries all of the chromosomes and passes them to the egg cell, resulting in 38 chromosomes.
The claim is correct because a sperm cell carries all of the chromosomes and passes them to the egg cell, resulting in 38 chromosomes.

The claim is correct because a sperm cell fertilizes an egg cell, resulting in a cell with 38 chromosomes.
The claim is correct because a sperm cell fertilizes an egg cell, resulting in a cell with 38 chromosomes.

The claim is incorrect because the egg and sperm cells divide and have a total of 76 chromosomes when they combine.
The claim is incorrect because the egg and sperm cells divide and have a total of 76 chromosomes when they combine.

The claim is incorrect because the egg and sperm cells have a total of 19 chromosomes when they combine.

1 answer

The correct response is:

The claim is correct because a sperm cell fertilizes an egg cell, resulting in a cell with 38 chromosomes.

In sexual reproduction, a sperm cell (which has 19 chromosomes in this case) and an egg cell (also with 19 chromosomes) combine during fertilization to create a zygote. This zygote will then have 38 chromosomes (19 from the sperm and 19 from the egg), which is the typical diploid number of chromosomes for a body cell of that organism.