ln human beings, the chromosomes that determine birth of a normal female child are ________.

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Q: 109 (CDS-II/2020)
ln human beings, the chromosomes that determine birth of a normal female child are ________.

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,7,8,7,5,1,2

In human beings, the chromosomes that determine the birth of a normal female child are an X chromosome from the mother and an X chromosome from the father. This is option 1.

To understand why this is the correct answer, it`s important to note that human cells contain 23 pairs of chromosomes, with one pair being the sex chromosomes. The sex chromosomes determine the biological sex of an individual.

Females have a pair of X chromosomes (XX), while males have one X chromosome and one Y chromosome (XY). During fertilization, the sperm carries either an X or a Y chromosome, while the egg always carries an X chromosome. If an X-carrying sperm fertilizes the egg, the resulting embryo will have two X chromosomes and develop into a female child.

Therefore, option 1 - one X chromosome from the mother and one X chromosome from the father - is the correct answer as it accurately describes the chromosomes responsible for the birth of a normal female child.