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Question
What is criss-cross inheritance?
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Solution
Inheritance of genes from a male parent to a female child and then to a male grandchild or female parent to a male child and then to a female grandchild.
E.g., X-linked gene inheritance.
RELATED QUESTIONS
Give scientific reasons : Colour blindness is more common in men than in women.
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 |
Differentiate between:
monohybrid and dihybrid cross (phenotypic ratio)
A haemophilic man marries a carrier women. Find out the probability of their offsprings being haemophilic.
Short Answer Question.
Observe the given pedigree chart and answer the following question.
Identify whether the trait is sex-linked or autosomal.
The genes present on non-homologous part of Y-chromosome are called ____________.
Rakesh is colour blind, married to Sangeeta who is having normal v1s10n (Homozygous). They have a son and a daughter. Determine the type of vision in their children with the help of a suitable chart.
The disease colour blindness is a ______.
