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Question
Choose the correct answer:
A single recessive trait, able to express must be on _________
Options
Y chromosome
X chromosomes in male
X chromosome in female
autosome
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Solution
A single recessive trait, able to express must be on X chromosomes in male
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RELATED QUESTIONS
Why did T. H. Morgan select Drosophila melanogaster to study sex linked genes for his lab experiments ?
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Define the following:
Autosomes
Define the following:
Sex-linked characters
Read the following statements and select the correct option.
i. If sperm containing Y chromosome fertilizes the ovum, then diploid zygote is formed that grows into a male child.
ii. If sperm containing X chromosome fertilizes ovum, then diploid zygote is formed, that grows into a female child.
Human offspring’s sex is determined ______
If a normal cell of the human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be ______
The maleness of a child is determined by
Female heterogamy is shown by
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
