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A male child would be born to parents if...

A male child would be born to parents if

A

Father is healthier than mother

B

Genetic chromosomal constitution of child is XX

C

Mother feeds well during pregnancy

D

Genetic chromosomal constitution of child is XY

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To determine whether a male child would be born to parents, we need to understand the basics of sex determination in humans, particularly focusing on the genetic chromosomal constitution of the child. ### Step-by-Step Solution: 1. **Understanding Chromosomes**: In humans, sex is determined by the presence of sex chromosomes. There are two types of sex chromosomes: X and Y. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). 2. **Gamete Formation**: During reproduction, each parent contributes one sex chromosome to the child. The mother can only provide an X chromosome (since she has XX), while the father can provide either an X or a Y chromosome (since he has XY). 3. **Combination of Chromosomes**: - If the sperm from the father carries an X chromosome and fertilizes the egg from the mother (which always carries an X chromosome), the resulting combination will be XX, resulting in a female child. - If the sperm carries a Y chromosome and fertilizes the egg, the resulting combination will be XY, resulting in a male child. 4. **Conclusion**: Therefore, a male child will be born if the sperm from the father carries a Y chromosome. This means the genetic chromosomal constitution of the child must be XY. ### Final Answer: A male child would be born to parents if the genetic chromosomal constitution of the child is XY. ---
To determine whether a male child would be born to parents, we need to understand the basics of sex determination in humans, particularly focusing on the genetic chromosomal constitution of the child. ### Step-by-Step Solution: 1. **Understanding Chromosomes**: In humans, sex is determined by the presence of sex chromosomes. There are two types of sex chromosomes: X and Y. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). 2. **Gamete Formation**: During reproduction, each parent contributes one sex chromosome to the child. The mother can only provide an X chromosome (since she has XX), while the father can provide either an X or a Y chromosome (since he has XY). ...
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