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प्रश्न
Brief about female heterogamety.
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उत्तर
Female heterogamety (ZO females) refers to the condition, where female produces two types of egg cells. Some with Z chromosome and some without Z chromosome.
संबंधित प्रश्न
If X chromosome is inherited from mother and Y from father, the offspring will be male.
In a human, how many chromosmes are present in a skin cell?
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?
What is heterogamety ? Explain the mechanism of sex determinatin in Drosophila.
Complete the following sentence with appropriate word:
______are the alternative forms of a gene producing different effects.
What is parthenogenesis?
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
Which of the following combination of chromosome numbers represents the correct sex determination pattern in honey bees?
In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is/are ______.
- large chromosome
- small chromosome
- Y-chromosome
- X-chromosome
A zygote which has an X-chromosome inherited from the father will develop into a ______.
