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प्रश्न
What is the reason for the 21st trisomy?
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उत्तर
21st Trisomy occurs due to non-disjunction or failure of separation of chromosomes (autosomes) during gamete formation.
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संबंधित प्रश्न
A colour-blind child is born to a normal couple. Work out a cross to show how it is possible. Mention the sex of this child.
The genotype of a person withTumer's syndrome will be:
(i) 44+XXY
(ii) 44+XYY
(iii) 44+XO
(iv) 44+XXYY
Attempt any TWO of the following:
‘The gene for sickle cell anaemia in homozygous condition is lethal and produces sickle cell trait in heterozygous carrier’. Explain.
Identify the option that correctly represents the number of chromosomes in Down syndrome.
If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is ______.
In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?
It is well known that Queen Victoria of England was a carrier for haemophilia. Since this is an X-linked disease, it can be predicted that ______.
The person with Turner’s syndrome has ______.
What is the genotype of Turner's Syndrome?
What are chromosomal disorders?
