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प्रश्न
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
पर्याय
It occurs in birds and some reptiles
Females are homogametic and males are heterogametic
Male produce two types of gametes
It occurs in gypsy moth
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उत्तर
Females are homogametic and males are heterogametic
संबंधित प्रश्न
Write notes on sex determination in the unborn baby.
Which of the two, sperm or ovum, decides the sex of the child?
- E is the gene for brown eye colour and e is the gene for blue eye colour. Which gene is (i) recessive, and (ii) dominant?
- Both father and mother have the genes Ee in their cells. What colour are their eyes?
- Which combination of genes in the zygote will produce children with blue eyes?
- Which combinations of genes in the zygote will produce children with brown eyes?
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?
Define the following:
Sex-linked characters
How drones are produced in honey bees?
A zygote which has an X-chromosome inherited from the father will develop into a
The belief that the mother is completely responsible for the sex of the child is wrong because the child
Which pair of sex chromosome will determine a male?
Given below are two statements:
Statement - I: The male Drosophila has a pair of homomorphic sex chromosomes.
Statement - II: The male human being has a pair of heteromorphic sex chromosomes.
In the light of above statements, Choose the most appropriate answer from the options given below:
