Advertisements
Advertisements
प्रश्न
Name the type of cell division involved in the production of sperms by honey bees.
Advertisements
उत्तर
The sperms in honey bee are produced by mitosis.
संबंधित प्रश्न
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. Give one reason.
Briefly mention the contribution of T. H. Morgan in genetics.
Genes G S L H are located on the same chromosome. The recombination percentage is between L and G is 15%, S and L is 50%, H and S are 20%. The correct order of genes is
If the haploid number in a cell is 18. The double monosomic and trisomic number will be
Codon – anticodon interactions occur by
A B B C C D E F G H I
From the above figure identify the type of mutation and explain it.
From the following identify the statements that are CORRECT with respect to homologous and non-homologous region of X and Y chromosomes.
i. Non-homologous region of X chromosome is longer and contains more genes than that of non-homologous region of Y chromosome.
ii. X-linked genes are present on nonhomologous region of X-chromosome.
iii. Y-linked genes are present on homologous region of Y-chromosome.
iv. Crossing over occurs only between homologous regions of X and Y chromosomes.
At secondary constriction I, ______ becomes organized during interphase.
A plant having the genotype AABbCC will produce ______ kinds of gametes.
Extranuclear inheritance occurs in ______.
Extranuclear inheritance is a consequence of presence of genes in ______.
Which three scientists independently rediscovered Mendel’s work?
Experimental verification of ‘chromosomal theory of inheritance’ was done by ______.
What would be the genotype of the parents if the offspring have the phenotypes in 1:1 proportion?
Which of the following phase follows S and G2 phases of interphase?
How do genes and chromosomes share similarity from the point of view of genetical studies?
Discuss in detail the contributions of Morgan and Sturvant in the area of genetics.
Which of the following sentences are correct?
1. The offspring exhibit only parental combinations due to incomplete linkage
2. The linked genes exhibit some crossing over in complete linkage
3. The separation of two linked genes are possible in incomplete linkage
4. Crossing over is absent in complete linkage
