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प्रश्न
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उत्तर
The sex of the zygote is determined by the sperm which fertilizes the ovum. If an X bearing sperm fuses with an ovum in man, the offspring would be female and if a Y chromosome bearing sperm fuses with an ovum the offspring will be a boy.
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संबंधित प्रश्न
Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
Define the following:
Sex-linked characters
Choose the correct answer:
A single recessive trait, able to express must be on _________
What is Lyonisation?
There are five daughters and no son in a family. It is because
Sex is determined in human beings ______.
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
A zygote which has an X-chromosome inherited from the father will develop into a ______.
Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that
A woman has only daughters. Analyse the situation genetically and provide a suitable explanation.
