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Question
Give Reason:
Hemophilia shows criss-cross inheritance.
Solution
The gene that causes hemophilia is recessive and lies in the X-chromosomes.
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RELATED QUESTIONS
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 |
A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.
On which chromosome is the gene of this trait located?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Females are more affected by sex-linked genetic 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.
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 ______
If a normal visioned woman marries a colour blind man then, ______,
If a carrier woman marries a normal visioned man, what is the percentage possibility of sons being colourblind?
Holandric genes are located ______.
The disease colour blindness is a ______.
