The most important example of point mutation is found in a disease called
Options
(a) Thalassemia (b) Down’s syndrome (c) Night blindness (d) Sickle-cell anaemia
Correct Answer:
Sickle-cell anaemia
Explanation:
No explanation available. […]
The number of autosomes in human female is
Options
(a) 26 pairs (b) 22 pairs (c) 24 pairs (d) 21 pairs
Correct Answer:
22 pairs
Explanation:
No explanation available. Be the first to […]
The number of chromosomes present in the cells of the bread wheat Triticum aestivum suggests that it is
Options
(a) hexaploid (b) diploid (c) tetraploid (d) pentaploid
Correct Answer:
hexaploid
Explanation:
No explanation […]
The possible blood groups of children born to parents having A and AB groups are
Options
(a) O, A (b) A, B, AB (c) O, A, B (d) O, A, B, AB
Correct […]
The process of transfer of genetic information from DNA to RNA is
Options
(a) transversion (b) transcription (c) translation (d) translocation
Correct Answer:
transcription
Explanation:
No explanation available. Be the first to write […]
The rule that in a DNA the amount of adenine equals to that of the thymine and that of guanine equals to that of cytosine is known as
Options
(a) Allen’s rule (b) […]
The smallest RNA molecules are
Options
(a) mRNA (b) tRNA (c) rRNA (d) both (a) and (b)
Correct Answer:
tRNA
Explanation:
No explanation available. Be the first to write the explanation for this […]
The triplet UUU codes for
Options
(a) leucine (b) methionine (c) phenylalanine (d) glycine
Correct Answer:
phenylalanine
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The trisomy for 21st chromosome is called
Options
(a) Klinefelter’s syndrome (b) Turner’s syndrome (c) Down’s syndrome (d) sickle-cell anaemia
Correct Answer:
Down’s syndrome
Explanation:
No explanation available. Be the first to write […]
There are 64 codons in the genetic dictionary as
Options
(a) there are 3 nonsense codons and 61 sense codons (b) there are 64 different types of tRNA (c) there are 64 amino […]
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