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प्रश्न
Write a note on sex linkage.
Write a short note on sex linkage.
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उत्तर
Sex linkage refers to the phenomenon where genes are located on the sex chromosomes, usually the X chromosome, and their inheritance is linked to the sex of the individual. Sex-linked traits are passed from parents to offspring through these chromosomes, leading to different patterns of inheritance in males and females. For example, in humans, disorders like hemophilia and color blindness are sex-linked, predominantly affecting males because they have only one X chromosome. Thomas Hunt Morgan's work on fruit flies established the concept of sex linkage by studying eye color traits inherited differently in males and females due to genes on the X chromosome.
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संबंधित प्रश्न
Which of the following is NOT an example of connecting link?
- Archaeopteryx
- fchthyostegia
- Seymouria
- Biston betularia
Answer the following question.
Explain linkage and recombination as put forth by T.H. Morgan based on his observations with the Drosophila melanogaster crossing experiment.
Which of the following refers to tendency of genes to inherit together?
A cross between pure tall pea plant with green pods and dwarf pea plant with yellow pods will produce dwarf F2 plants out of 16 is ______.
Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as ______.
After crossing two plants, the progenies are found to be male sterile. This phenomenon is found to be maternally inherited and is due to some genes which are present in ______.
Mendal formulated the law of purity of gametes on the basis of ______.
Genes located very close to one another on same chromosome tend to be transmitted together and are called as ______.
The strength of linkage between two genes is ______.
The enzyme involved in the process of crossing over is ______.
