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प्रश्न
A family has five daughters and expecting sixth child. The chance of its beings a son is
विकल्प
zero
25%
50%
100%
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उत्तर
50%
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संबंधित प्रश्न
find odd one from following: Typhoid, Haemophilia, Albinism, Colour blindness.
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 |
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Cancer is a genetic disorder.
Short Answer Question.
Observe the given pedigree chart and answer the following question.
Give an example of a trait in human beings which shows such a pattern of inheritance.
Why are sex linked recessive characters more common in the male human beings?
Explain the inheritance of sex-linked characters in human being.
Study the following statements and select the correct option.
Statement I: Holandric genes are present on Y chromosome. Statement II: Holandric genes are always inherited from father to son.
Teena's father bas haemophilia which is an X-linked recessive trait, but her husband has normal blood clotting. What is the chance her son will have the disease?
If a carrier woman marries a normal visioned man, what is the percentage possibility of sons being colourblind?
