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प्रश्न
What is criss-cross inheritance?
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उत्तर
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.
संबंधित प्रश्न
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 |
A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.
Name one other trait in humans which follows a similar pattern of inheritance.
Name any one X-linked disease found in humans.
What are X-linked genes?
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.
Both male and female have normal vision though their fathers were colour blind mothers did not have any gene for colour blindness. The probability of their daughter becoming colour blind is ______.
The genes present on non-homologous part of Y-chromosome are called ____________.
Identify the progeny produced if a colour blind male marries a normal vision female.
The disease colour blindness is a ______.
