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प्रश्न
A woman had normal vision, but her father was colourblind. She marries a man, who is colourblind.
Find out the probability of the first child being colourblind, whether it is a boy or girl.
उत्तर
That woman is heterozygous, and carrier of that trait because her father was colourblind. She marries a colourblind man, then it might be possible that her first child will be colourblind whether a son or a daughter because mother and father both possess an inherited chromosome.
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संबंधित प्रश्न
Match the terms in column I with their explanations in column II.
| Column I (Term) | Column I (Explanation) | ||
| a | genetics | 1 | Chromosomes similar in size and shape |
| b | Autosomes | 2 | The alternative forms of a gene |
| c | Recessive gene | 3 | Study of laws of inheritance of characters |
| d | Allele | 4 | A gene that can express only when in a similar pair |
| e | Homologous chromosomes | 5 | Chromosomes other than the pair of sex chromosomes |
Differentiate between:
character and trait.
Why do men suffer from hemophilia and colour blindness? Under what conditions do women suffer from these disorders?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Colour blindness is a Y-linked character.
A family has five daughters and expecting sixth child. The chance of its beings a son is
Girl of normal vision whose father was colour blind marries a man of normal vision whose father was also colour blind. The sons of this marriage would be ______.
Identify the INCORRECT statement with regard to haemophilia.
Identify the progeny produced if a colour blind male marries a normal vision female.
Given diagram is a simplified representation of human sex chromosome. The gene A and B could be of ______.
If the mother is normal and the father is haemophilic, then their two daughters will be ______.
