probability of inheriting an X allele and Y allele is 50:50 . give reasons. with suitable diagram.
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In humans
• Female are homogametic and produce only kind of gamet(with X chromosome)
•males are heterogametic and produce two types of gamets (with X or with Y chromosome)
•when male gamet with X chromosome fertilises the female gamet the zygote formed possesses two X chromosomes (XX) .this develop into a female child
•when male gamet with Y chromosome fertilises the female gamet the zygote formed possesses one X chromosome and one Y chromosome (XY) .this develop into a male child
Thus the chance of getting a male or a female child is 50:50
• Female are homogametic and produce only kind of gamet(with X chromosome)
•males are heterogametic and produce two types of gamets (with X or with Y chromosome)
•when male gamet with X chromosome fertilises the female gamet the zygote formed possesses two X chromosomes (XX) .this develop into a female child
•when male gamet with Y chromosome fertilises the female gamet the zygote formed possesses one X chromosome and one Y chromosome (XY) .this develop into a male child
Thus the chance of getting a male or a female child is 50:50
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