Question

Which of the following statements about the chromosome number in humans and fruit flies is true?

Multiple choice question.
a) Humans have 46 chromosomes, while fruit flies have 8 chromosomes
b) Humans have 46 chromosomes, while fruit flies have 20 chromosomes
c) Humans have 40 chromosomes, while fruit flies have 20 chromosomes
d) Humans have 40 chromosomes, while fruit flies have 8 chromosomes

Answer 1

Humans have 46 chromosomes, totaled in 23 pairs, including autosomal and sex chromosomes. Fruit flies have 4 pairs of chromosomes, amounting to 8 in total. The correct answer to the question is (a).

Step-by-step explanation:

The correct statement about the chromosome number in humans and fruit flies is that humans have 46 chromosomes, while fruit flies have 8 chromosomes. Human cells normally have 46 chromosomes in each cell, divided into 23 pairs. The 22 pairs are known as autosomal chromosomes, and the 23rd pair constitutes the sex chromosomes, which are either XX (female) or XY (male). On the other hand, fruit flies, known scientifically as Drosophila melanogaster, have 4 pairs of chromosomes, for a total of 8 chromosomes. Therefore, the correct answer is: (a) Humans have 46 chromosomes, while fruit flies have 8 chromosomes.