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Question
Why are sex linked recessive characters more common in the male human beings?
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Solution
Sex linked inherited traits are more common in males than females because, males are hemizygous and therefore express the trait when they inherit one mutant allele.
RELATED QUESTIONS
Give technical terms for Repeated units of DNA molecule
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.
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?
If a woman has an allele for an X-Linked condition i.e. haemophilia, on one of her X chromosomes then this chromosome can be inherited by ______
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 ______.
If a carrier woman marries a normal visioned man, what is the percentage possibility of sons being colourblind?
A normal man marries a female carrier for sickle cell anemia. What are the chances of having carrier children?
Name any two X-Linked recessive disorders.
