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प्रश्न
Mention the contribution of the scientist given below in the study of chromosome:
Balbiani
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उत्तर
Balbiani - Described rod like structures in nucleus before cell division.
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संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
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.
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Write a sentence of the following:
Centromere
Write a sentence of the following:
Telomere
Choose the correct answer:
The term 'chromosome' was coined by ___________
Choose the correct answer:
Telocentric chromosomes are _________________
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
Explain the Term Spindle
Name the following:
The part of the cell associated with heredity.
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
Give Reason:
The Law of independent assortment holds good for the gene pairs that occur in different pairs of chromosomes.
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Multiple Choice Question
Chromosomal aberrations are caused by:
The thin thread-like structures found in the nucleus of each cell are called ______.
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
Small swellings on the surface of the chromosome are called______.
Define Aneuploidy.
