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प्रश्न
A normal visioned woman, whose father is colour blind, marries a normal visioned man. What would be probability of her sons and daughters to be colour blind? Explain with the help of a pedigree chart.
A normal visioned woman, whose father is colour blind, marries a normal visioned man. What would be the probability of her (a) sons, (b) daughters to the colour blind?
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उत्तर
All daughters normal visioned; 50% of sons are likely to be colour blind.
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
Suggest how pedigree analysis can be useful?
The pedigree chart given below shows a particular trait which is absent in parents but present in the next generatoin irrespective of sexes. Draw your conclusion on the basis of the pedigree.
Study the Pedigree chart given below and answer the questions that follow:
Symbols used in the given Pedigree Chart are as follows:
 |
Carrier male |
 |
Affected male |
 |
Normal male |
 |
Carrier female |
 |
Affected female |
 |
Normal female |
(a) On the basis of the inheritance pattern exhibited in this pedigree chart, what conclusion can you draw about the pattern of inheritance?
(b) If the female is homozygous for the affected trait in this pedigree chart, then what percentage of her sons will be affected?
(c) Give the genotype of offspring 1, 2, 3 and 4 in III generations.
OR
(c) In this type of inheritance pattern, out of male and female children which one has less probability of receiving the trait from the parents? Give a reason.
What should be the genotype of the indicated member?
With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F3 generation.
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What is the term used to describe the individual from whom a pedigree study begins?
What is the primary chart constructed during pedigree analysis called?
Why is controlled crossing not possible in human pedigree studies?
What is the typical duration of one human generation?
How are affected individuals typically represented in a pedigree chart?
How are known carriers of a trait represented in a pedigree chart?
What does a horizontal line connecting two symbols in a pedigree chart represent?
What does a double horizontal line between two symbols in a pedigree chart represent?
What is the purpose of pedigree analysis in medical applications?
Why is the small family size of humans considered a limitation for pedigree analysis?
What symbol represents the death of an individual in a pedigree chart?
What symbol represents abortion or still birth of an unspecified sex in a pedigree chart?
