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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. |
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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
Synthesis phase in the cell cycle is called so, because of the synthesis of more:
A. RNA
B. RNA and proteins
C. DNA
D. Glucose
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
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.
Fill in the blank
The _______ (s) are surrounded by radiating rays called aster
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Write a sentence of the following:
Sheath
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
The term 'chromosome' was coined by ___________
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
What are chromosomes?
Why gametes have a haploid number of chromosomes?
Explain the Term Zygotene
Explain the Term Chromosomes
Multiple Choice Question:
The period between two successive mitotic divisions is
State the Location: Chromosomes
Nullisomy is represented by ______.
In humans, the sex chromosome complement is
The number of chromosomes found in human beings is ______.
Identify the TRUE statements with respect to aneuploidy.
- When the chromosome number is not the exact multiple of the haploid set, it is described as aneuploidy.
- Aneuploidy is only addition of one or more chromosome(s) to the total number of chromosomes in a cell.
- Aneuploidy is further classified as hypoploidy and hyperploidy.
Which of the following is TRUE with respect to the genes which inherit together during crossing over?
