AP BIOLOGY

CELL DIVISION

MEIOSIS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

If a sexually reproducing organism has 48 chromosomes in its body cells, how many chromosomes did it inherit from each parent?

A	24
B	48
C	12
D	14

Explanation:

Detailed explanation-1: -Therefore, 19 chromosomes are inherited from each parent.

Detailed explanation-2: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

Detailed explanation-3: -48, XXYY syndrome results from the presence of an extra copy of both sex chromosomes in each of a male’s cells (48, XXYY). Extra copies of genes on the X chromosome interfere with sexual development, preventing the testes from functioning normally and reducing the levels of testosterone.

Detailed explanation-4: -A diploid cell has two complete sets of chromosomes. Most cells in humans are diploid, comprising 23 chromosome pairs, so 46 chromosomes in total. This is 22 pairs of autosomes and a pair of sex chromosomes.

Detailed explanation-5: -Answer and Explanation: If a parent cell has 28 chromosomes and undergoes meiosis, the resulting cells will have (c) 14 chromosomes. Meiosis is a cell division process that produces four daughter cells after two consecutive cell divisions (meiosis I followed by meiosis II).

There is 1 question to complete.