4. Evaluate whether the sex of the child will depend on the chromosomes of the egg or the sperm that fertilizes it. Give reason to justify your answer.
Answers
Answer:
The chromosome in the human female is XX while that in the male is XY.
If a sperm carrying X chromosome fertilizes an ovum or egg, which carries X chromosome, then the child born will be a girl (female). This is because the child will have XX combination of sex chromosomes.
If a sperm carrying Y chromosome fertilizes an ovum, which carries X chromosome, then the child will have XY combination of sex chromosome and hence it will be a male child.
Answer:
The sex of the child depends upon the chromosomes the sperm contain.
Explanation:
Female ovaries contain eggs that have the chromosomes XX but the male sperm contains XY chromosomes. If the X chromosome fertilises the egg, an XX zygote is formed which will further develop into a girl child and if the Y chromosome fertilises the egg, an XY zygote is formed which will further develop into a baby boy.
Female X + Male X -------- XX [Girl]
Female X + Male Y -------- XY [Boy]
Through this, we can say that the sex of a child solely depends upon the chromosomes present in the sperm which fertilises the egg and further develop into a girl or boy child depending upon the chromosome.