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प्रश्न
Give an example of complete linkage.
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उत्तर
X chromosome of Drosophila males shows complete linkage.
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संबंधित प्रश्न
Name the ‘two’ types of maps generated by H.G.P.
A cross between a normal couple resulted in a son who was haemophilic and a normal daughter. In course of time, when the daughter was married to a normal man, to their surprise, the grandson was also haemophilic.
- Represent this cross in the form of a pedigree chart. Give the genotypes of the daughter and her husband.
- Write the conclusion you draw of the inheritance pattern of this disease.
How many linkage groups are present in Drosophila melanogaster?
Differentiate between complete and incomplete linkage.
Analyse the following statements with respect to complete sex linkage and select the correct option.
- It is exhibited by genes located on non-homologous regions of X and Y chromosomes
- Y-linked trait is hypertrichosis.
- X-linked traits are haemophilia, red-green colour blindness, myopia (near sightedness).
In a cross between AABB × aabb, the ratio of F2 genotypes between AABB, AaBB, Aabb, and aabb would be ______.
Crossing over in diploid organism is responsible for ______.
In a given plant, red colour (R) of fruit is dominant over white fruit (r); and tallness (T) is dominant over dwarfness (t). If a plant with genotype RRTt is crossed with a plant of genotype rrtt, what will be the percentage of tall plants with red fruits in the next generation?
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?
The formation of different types of gametes during sexual reproduction in plants is due to ______.
