Advertisements
Advertisements
प्रश्न
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
- 18
- 27
- 36
Advertisements
उत्तर
(b) 18
Endosperm is triploid (3n) = 27. Hence, n = 9. Definitive nucleus, i.e. the secondary nucleus is diploid, i.e. 2n. Therefore, the number of chromosomes is 18.
APPEARS IN
संबंधित प्रश्न
Sketch and label the structure of chromosome.
Briefly mention the contribution of T. H. Morgan in genetics.
Describe the structure of chromosomes with a suitable diagram.
If the haploid number in a cell is 18. The double monosomic and trisomic number will be
Telocentric chromosome differs from acrocentric chromosome in that ____________.
Read the following statements regarding 'X and Y' chromosomes and select the correct option.
P - Due to presence of large amount of euchrornatin X chromosome is genetically more active.
Q - Due to presence of small amount of heterochromatin Y chromosome is genetically more active.
Which of the following does NOT agree with chrotnosomal theory of inheritance?
Extranuclear inheritance occurs in ______.
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are ______.
A haemophilic man marries a carrier woman and they have a daughter. What is the probability of their daughter being haemophilic?
