Chromosomes are made up of
(a) DNA
(b) protein
(c) DNA and protein
(d) RNA
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In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete?
Number of chromosomes in female gamete is 24 Number of chromosomes in zygote is 48, as it is formed after fertilization of both male & female gamete.
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Depending upon the chemical nature of the template (DNA or RNA) and the nature of
There are two different types of nucleic acid polymerases. DNA-dependent DNA polymerases DNA-dependent RNA polymerases The DNA-dependent DNA polymerases use a DNA template for synthesizing a new strand of DNA, whereas DNA-dependent RNA...
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In a nucleus, the number of RNA nucleoside triphosphates is 10 times more than the number of DNA nucleoside triphosphates
DNA polymerase is highly specific to recognise only deoxy ribonucleoside triphosphates. Therefore it cannot hold RNA nucleotides.
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Recall the experiment done by Frederick Griffith. If RNA, instead of DNA was the genetic material
RNA is more labile and prone to degradation (owing to the presence of 2’ OH group in its ribose). Hence heat-killed S-strain may not have retained its ability to transform...
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What are chromosomes? Explain how in sexually reproducing organisms the number of chromosomes in the progeny is maintained.
Chromosomes are thread-like structures, made of proteins and DNA, found in the nucleus at the time of cell division. In sexually reproducing organisms, the gametes undergo meiosis, and hence, each gamete...
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If there are 999 bases in an RNA that codes for a protein with 333 amino acids,
The correct answer is (2) If deletion happen at 901st position than the remaining 98 bases specifying for 33 codons of amino acids will be altered.
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RNA is different from DNA because RNA contains.
(b): DNA RNA (a) Pyrimidine Cytosine Cytosine derivatives Thymine Uracil (b) Purine Adenine Adenine derivatives Guanine Guanine (c) Sugar Deoxyribose Ribose
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In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes.
a. males and females, respectively
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In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called:
c. Such a DNA is called 0:1:3.
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Write the main structural difference between DNA and RNA. Of the two bases, thymine and uracil, which one is present in DNA?
Structural difference DNA RNA 1. The sugar present in DNA is 2-deoxyD-(–)-ribose 1. The...
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