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संबंधित प्रश्न
The Chromatin material is formed forms of ______.
Match the events given in column A with the phase in mitotic cell division in column B.
| Column ‘A’ | Column ‘B’ | ||
| 1. | Chromosomes get arranged in a horizontal plane at the equator. |
a. | Anaphase |
| 2. | Daughter chromosomes move to the opposite poles of a spindle |
b. | Prophase |
| 3. | Chromosomes become visible as fine, long threads. |
c. | Telophase |
| 4. | Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network. |
d. | Metaphase |
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
Thick short chromosomes can be observed at (in mitosis) ___________
Choose the correct answer:
Chromosome number of man is _____________
Choose the correct answer:
Telocentric chromosomes are _________________
Choose the correct answer:
Sex of an individual is determined by ____________
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Give Reasons for the following
Chromosomes are the carriers of heredity.
Name the following:
The diploid number for cell of man.
Compare X chromosome and Y chromosome.
Identify the odd one:-
The loss of one or more chromosomes in ploidy is called ______.
Match the following.
| 1. Autosomes | - | Trisomy 21 |
| 2. Diploid condition | - | 9 : 3 : 3 : 1 |
| 3. Allosome | - | 22 pair of chromosome |
| 4. Down’s syndrome | - | 2n |
| 5. Dihybrid ratio | - | 23rd pair of chromosome |
In higher unisexual animals, one pair of chromosomes is not identical in two sexes. It is called as ______.
Normally, genes occur in a pair of chromosome, but genes of X and Y chromosomes shows different gene loci indicating ______.
After a mitotic cell division, a human female cell will have ______.
Given below is a set of four term. Choose the odd one and write the category of the remaining term:
