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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
Linkage and crossing-over of genes are alternatives of each other. Justify with the help of an example.
Write the scientific name of the organism Thomas Hunt Morgan and his colleagues worked with for their experiments. Explain the correlation between linkage and recombination with respect to genes as studied by them.
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.
What is crossing over?
From the following disorders identify the ODD one.
Mr. Kapoor has Bb autosomal gene pair and d allele sex-linked. What shall be proportion of Bd in sperms?
Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent?
What is true about the crossing over between linked genes?
From a cross AABb x aaBb, the genotypes AaBB : AaBb : Aabb will be obtained in the ratio ______.
The following are results of crossing a female fly (AaBb) with a male fly (aabb).
- AaBb 1005
- aabb 1000
- Aabb 200
- aaBb 210
Which two genotypes are the recombinant offspring?
