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प्रश्न
What is criss-cross inheritance?
उत्तर
Inheritance of genes from a male parent to a female child and then to a male grandchild or female parent to a male child and then to a female grandchild.
E.g., X-linked gene inheritance.
संबंधित प्रश्न
Make a punnett square for finding out the proportion of different genotypes in the progeny of a genetic cross between.
red flower variety of pea (RR) with white flower variety of pea (rr)
Answer the following briefly:
Explain with the help of a chart what will be the colour of a child's hair if father has got dominant gene for black hair and mother has recessive gene for brown hair?
Choose the correct answer:
A carrier haemophilic woman marries a haemophilic man. What are the chances for her progeny to be haemophilic?
Choose the correct answer:
A colour blind woman marries a normal man, in the progeny _________
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Linkage is a permanent feature of few genes.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A colourblind male cannot distinguish any colour.
What are X-linked genes?
Haemophilia is more common in males because it is a ____________.
Father of a child is colourblind and mother is carrier for colourblindness, the probability of the child being colourblind is ____________.
What are holandric genes?
Inheritance of hypertrichosis occurs directly from ____________.
What would be the progeny obtained if a woman carrier for colour blindness marries a normal vision man?
What is the probability of son being colour blind is if a colour blind man marries a woman who is homozygous for normal colour vision?
Holandric genes are found only in ____________.
Which of the following is CORRECT with respect to sex-linked genes?
A man is haemophilic. It indicates that he ______.
Holandric genes are located ______.
Types of sex- linked genes:
(Haemophilia, Ichthyosis, nephritis, Myopia, Hypertrichosis, Retinitis pigmentosa)
| Column 'A' | Column 'B' | |
| (1) | Completely X- linked genes | ______ |
| (2) | Completely Y- linked | ______ |
| (3) | Incompletely sex-linked genes | ______ |
