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Sex-linked genes are present on _____.

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Important Questions on Inheritance and Variation

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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Which of the following most appropriately describes haemophilia?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance

Inheritance of which of the following traits is shown in the given cross?

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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
What do you mean by sex linked Inheritance. Mention the cause and symptoms of Turner's syndrome.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
In the following human pedigree, the filled symbols represents the affected individuals. Identify the type of given pedigree.


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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Satish is a colour blind boy. His mother has normal vision but his maternal grandfather is colour blind. His father and maternal grandmother have normal vision. Explain the pattern of inheritance with a suitable chart.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
A colourblind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their sons being colourblind?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
What is sex-linked inheritance? Discuss how sex-linked gene inheritance occurs in human giving two examples.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Which of the following muscular disorders is inherited?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
A carrier haemophilic female marries a normal male. What will be the phenotype of progeny? Explain with suitable chart.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
A woman has X-linked condition on one of her X chromosomes. These chromosomes can be inherited by:
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance

Statement I : All the three types of allosomal genes - X linked, Y linked and XY linked are present only in male human being.
Statement II : Only X linked and not XY linked genes are present in female human being.

The correct option among the following is

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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
A couple has two sons and two daughters. Only one son is colour blind and the rest of the siblings are normal. Assuming colour blindness is sex-linked, which ONE of the following would be the phenotype of the parents?
HARD
Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Pick out the correct statements:
(i) Haemophilia is a sex-linked recessive disease.
(ii) Down's syndrome is due to aneuploidy.
(iii) Phenylketonuria is an autosomal recessive gene disorder.
(iv) Sickle cell anaemia is an X-linked recessive gene disorder.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Point mutation is caused in which of the following diseases?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Select the correct match.
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Which pair is incorrect ?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
Which ONE of the following Mendelian diseases is an example of X-linked recessive disorder?
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Biology>Genetics and Evolution>Inheritance and Variation>Sex Linked Inheritance
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?