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Question
Four friends P, Q, R and S were discussing the examples of genetic disorders. The examples they quoted were as follows:
P. Colour blindness and Malaria
Q. Albinism and Cholera
R. Haemophilia and Colour blindness
S. Haemophilia and Albinism
Who gave the correct examples?
Options
P and Q
R and S
P and R
Q and S
Solution
R and S
Explanation:
Malaria and cholera are examples of acquired diseases that result from bacterial infections. Genetic disorders include hemophilia (genetic anemia resulting from a lack of blood clotting capacity), color blindness (a genetic deficiency of distinguishing specific hues) and albinism (an inherited disorder of skin pigmentation or very light pale skin and hair).
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RELATED QUESTIONS
A woman has normal vision but her father was colour blind. If she is married to a colour blind person, report on the occurrence of the disease in the progeny.
Differentiate Between Haemophilia and Colour blindness.
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.
Short Answer Question.
Observe the given pedigree chart and answer the following question.
Identify whether the trait is sex-linked or autosomal.
The criss-cross pattern of inheritance is observed in ____________.
A man is haemophilic. It indicates that he ______.
Which of the following is NOT an autosomal-linked recessive disease?
Rakesh is colour blind, married to Sangeeta who is having normal v1s10n (Homozygous). They have a son and a daughter. Determine the type of vision in their children with the help of a suitable chart.
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 | ______ |
If the mother is normal and the father is haemophilic, then their two daughters will be ______.
