Which of the following is a correct pair? | Organisms | Number of Chromosomes | | :--- | :--- | | Human | $2n = 42$ | | Fruit fly | $2n = 10$ | | Onion | $2n = 28$ | | House fly | $2n = 12$ |

AIIMS 2018 Botany Chromosome Number MCQ Question with Solution

Which of the following is a correct pair?

Organisms	Number of Chromosomes
Human	$2n = 42$
Fruit fly	$2n = 10$
Onion	$2n = 28$
House fly	$2n = 12$

A

Human

B

Fruit fly

C

Onion

D

House fly

Correct Answer

Option D

Detailed Explanation

In houseflies, the diploid chromosome number is represented as 2n = 12, indicating that there are 12 chromosomes in total, which means the haploid number (n) is 6. This implies that during gamete formation, houseflies produce sperm and egg cells containing 6 chromosomes each. Since the other options are not specified, they cannot be evaluated; however, understanding the significance of the diploid and haploid numbers is crucial in genetics, as it relates to inheritance and genetic diversity.

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