Related Questions

Consider the following statements and choose the correct answer:
1. In the phenomenon of linkage and crossing over, the genes are arranged in a linear order in a chromosome
2. The linkage groups in an organism are equivalent to the number of chromosome pairs
3. The chances of crossing over are more between two closely placed genes as compared to the genes placed in far proximity
4. The position of genes is very definite in the chromatid
Consider the following statements regarding the theory of linkage and choose the correct answer:
1. Genes are arranged in a linear fashion in the chromosomes
2. Genes that show linkage are situated in the chromosome
3. Linked genes remain in their original combination during the course of inheritance
4. The genes which are widely separated show strong linkage, while those closely located, have more chances to get separated by crossing over
Which region of chromatin is transcriptionally silent?
The X-chromosome once inactivated remains inactive throughout the life in all the cells of the body.
If two breaks occur in one chromosome, and one in a non-homologous one, the fragment from the first chromosome may become joined in an intercalary position in the second chromosome. This is a case of
A male plant of chromosome pp pollinates the plant having chromosome type PP. The expected chromosome in embryo and endosperm
Consider the following statements with regard to the functions of the centromere in the chromosome.
1. Centromeres are the centres of movement of the chromatids or chromosomes during anaphase separation.
2. Acentric chromosomes lack the capacity to segregate in a regular fashion.
3. Crosing-over in one arm of a metacentric chromosome does not affect the crossing over in the arm of the same chromosome.
Which of the statements given above are correct?
Consider the following statements regarding centromere and choose the correct answer:
1. The position of the centromere is constant for a particular chromosome
2. The structure and function of the centromere are different from that of the rest of the chromosome
3. During division the centromere is functional, while the rest of the chromosome is genetically inactive
4. The position of the centromere varies in different chromosomes
The location of various genes on a chromosome relative to specific microscopically visible landmark on the chromosome is called
The maternal X-chromosome is inactivated during Dosage compensation.