6. The probability that a baby will be a boy is ½ as is the probability that a baby will be a girl. Explain this fact by explain

Question

4 years ago

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6. The probability that a baby will be a boy is ½ as is the probability that a baby will be a girl. Explain this fact by explain

ing the mechanism of meiosis in the production of gametes and the process of fertilization. If a family has 4 boys and 3 girls, what is the probability that the next child will be a girl?
Please show all work.

Biology

1 answer:

vivado [14] · Answer 1 · 2022-01-01T12:29:15+03:00

Response to the first question (I don't quite know how to explain the second): (Here's my simple version, just based off of common sense and background knowledge rather than a textbook. Hope it works!)
Gender is determined by the X and Y chromosomes. Females are XX, males are XY. Since there is already a ratio of 3:1 X:Y chromosomes, meaning that there are many more X chromosomes than Y chromosomes, it is more likely for the child to be female, because they are more likely to get two X chromosomes.