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प्रश्न
Write the functional activity of the following structure:
Chromosomes
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उत्तर
Carry genetic information from parents to offspring.
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संबंधित प्रश्न
What is the number of chromosomes in the gametes of human beings?
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.
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
Chromosomes number is halved in ____________
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Mention the contribution of the scientist given below in the study of chromosome:
Balbiani
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
What is the importance of meiosis?
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Explain the Term Zygotene
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Define euploidy.
The centromere is found at the centre of the ______ chromosome.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
Normally, genes occur in a pair of chromosome, but genes of X and Y chromosomes shows different gene loci indicating ______.
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
