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प्रश्न
Name the species used in sericulture. Name the stages in the life cycle of a silk moth in cyclic form.
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उत्तर
Species used in sericulture is Bombyx Mori - it produces mulberry silk.
Various stages in life cycle of silk moth in cyclic form are
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संबंधित प्रश्न
Differentiate between male and female heterogamety.
A normal cell of human body contains 23 pairs of chromosomes. The number of chromosomes in a sex cell (sperm or ovum) of a human being is most likely to be :
(a) 46
(b) 23
(c) 21
(d) 42
Write a short note on sex determination in man.
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
From the following which option correctly represents the normal genetic constitution of a ovum?
Match the items of Column I with Column II:
| Column I | Column II | ||
| i. | XX-XO method of Sex Determination | a. | Turner syndrome |
| ii. | XX-XY method of Sex Determination | b. | Female heterog ametic |
| iii. | karyotype-45 | c. | Grasshopper |
| iv. | ZW-ZZ method of Sex Determination | d. | Female homogametic |
Haplodiploidy is found in ______.
Grasshopper is an example of XO type of sex determination in which the males have ______.
The chromosomal constitution of a human female can be written as ______
Does a male child inherit X chromosome from his father? Justify.
