Flow chart of sex determination in humans is given below. Information to be filled in the blanks a, b and c respectively are :
Important Questions on Heredity and Evolution
Ramesh has two daughters and his wife is pregnant again. He desires to have a son. So he forces his wife Maya to go for Sonography for sex determination of the child.
In the case of Ramesh's daughters which set of chromosomes is not present in them?
Ramesh has two daughters and his wife is pregnant again. He desires to have a son. So he forces his wife Maya to go for Sonography for sex determination of the child.
Is the sex determination test illegal? Why?
Man (44 + XY)
What does the number '44' indicate in this illustration ?
Ramesh has two daughters and his wife is pregnant again. He desires to have a son. So he forces his wife Maya to go for Sonography for sex determination of the child.
Who is responsible if the child born is a girl or a boy? Father's or Mother's sex chromosome.
In the diagram what is the sex of (A) and (B).
How is the sex of the child determined in human beings?
Answer the following:
Name:
The sex chromosome boys inherit from their father.
How is the sex of child determined in human beings?
Huntington's disease is an autosomal disorder characterized by movement, cognitive and psychiatric disorders. Study the given pedigree and identify the genotype of II - 3 and II - 4.
[Note: Solid squares/circles represent affected individuals and empty squares /circles denote unaffected normal individuals.]
What are the differences between the autosome and the sex chromosome of human-based on the following features?
(i) Nature
(ii) Number
Match the following?
| List I | List II | List III | |||
| a) | Duchenne muscular dystrophy DMD | i) | Y- linked | p) | Impair blood clotting |
| b) | Hypertrichosis | ii) | Sex limited | q) | Expression is limited to only one sex |
| c) | Haemophilia | iii) | - linked recessive | r) | Progressive weakening of muscles |
| d) | Baldness | iv) | Holandric | s) | Excessive growth of hair on the pinna |
