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प्रश्न
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
उत्तर
Change in the number or arrangement of genes in the chromosome.
| Column I | Column II |
| Genetics | Study of laws of inheritance of characters |
| Autosomes | Chromosomes are other than the pair of sex chromosomes. |
| Recessive gene | A gene that can express only when in a similar pair. |
| Allele | The alternative forms of a gene. |
| Homologous chromosomes | Chromosomes are similar in size and shape. |
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संबंधित प्रश्न
The term “chromosomes” literally means ______.
Given below is a schematic diagram of a portion of DNA.
- How many strands are shown in the diagram?
- How many nucleotides have been shown in each strand?
- Name the parts numbered 1, 2, 3, 4 and 5 respectively.
- Name the DNA unit constituted by the parts 1, 2, 3 collectively.
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Write a sentence of the following:
Sheath
Why gametes have a haploid number of chromosomes?
What is the importance of meiosis in creating variations?
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.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Name the following:
The number of chromosomes present in human gametes.
Compare X chromosome and Y chromosome.
Nullisomy is represented by ______.
Identify the odd one:-
Explain the structure of chromosomes with labelled diagram.
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
Small swellings on the surface of the chromosome are called______.
