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Question
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.
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Solution
Haemophilia, colour blindness are examples of sex-linked traits in humans.
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RELATED QUESTIONS
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 |
In a certain species of animals, black fur (B) is dominant over brown fur (b) Show the possible ratio of genotypes and phenotypes of the offspring of the pure breeding different coloured parents.
Explain the Term Linkage.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Colour blindness is a Y-linked character.
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Inheritance of hypertrichosis occurs directly from ____________.
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.
If a carrier woman marries a normal visioned man, what is the percentage possibility of sons being colourblind?
A plant with red flowers was crossed with another plant with yellow flowers. If F1 showed all flowers orange in colour, explain the inheritance.
The disease colour blindness is a ______.
