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प्रश्न
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.
उत्तर
- Two parallel strands.
- Two on each strand.
- (1) Phosphate, (2) Sugar, (3) Pyrimidines, (4) Hydrogen Bond and (5) Purines.
- Nucleotides.
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संबंधित प्रश्न
What is the number of chromosomes in the gametes of human beings?
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
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Sheath
Choose the correct answer:
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Explain the Term Leptotene
Explain the Term Chromosomes
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
State the Location: Polytene chromosome
Give Reason:
The Law of independent assortment holds good for the gene pairs that occur in different pairs of chromosomes.
Give the example of X- monosomy you have studied.
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
What' does 'P' and 'Q' represent in the following diagram of X and Y chromosomes? Select the correct option representing, its appropriate description.
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.
Small swellings on the surface of the chromosome are called______.
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Karyotype and Karyokinesis
