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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
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
The person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosome D in half of gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilisation, a female zygote results. On the other hand, combination of B and E chromosomes produces a male zygote.
(a) What are chromosomes (i) B (ii) D, and (iii) E?
(b) Out of B, D and E, which two chromosomes are of the same type?
(c) Which chromosome is smaller in size?
(d) What is the general name of chromosomes such as B and E?
(e) Out of the two persons A and C, which one is (i) male, and (ii) female?
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Complete the following sentence with appropriate word:
___________ chromosomes do not take part in sex determination.
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
How is sex determined in human beings?
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Sex is determined in human beings ______.
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