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प्रश्न
Give Reasons for the following
Chromosomes are the carriers of heredity.
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उत्तर
The chromosomes contain a gene which carries specific features to the offsprings.
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संबंधित प्रश्न
The term “chromosomes” literally means ______.
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
Mention whether the following statement is (T) Or (F). Give reason in support of your answer.
The unfertilized human egg has half the number of chromosomes of the body cells.
Answer the following question in your own words.
What is meant by ‘chromosome’?
Chromosomes are mainly made up of ______.
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Chromatin and Chromosome.
Give Technical Terms
The stage when sister chromosomes separate from their paired condition.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Chromosomes are the thickest and shortest in telophase.
Name the following:
The number of chromosomes present in human gametes.
What is allosome?
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 |
Small swellings on the surface of the chromosome are called______.
