The genetic defect-Adenosine deaminase (ADA) deficiency may be cured permanently by:
Options
(a) administering adenosine deaminase activators (b) introducing bone marrow cells producing ADA into cells at early embryonic stages (c) enzyme replacement […]
Select the correct statement from the ones give below with respect to dihybrid cross.
Options
(a) Tightly linked genes one the same chromosome show higher recombinations (b) Genes far apart on the same […]
Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the F₂ segregation will show
Options
(a) segregation in […]
Which one of the incorrect statement with regards to the importance of pedigree analysis?
Options
(a) It helps to trace the inheritance of a speicific trait (b) It confirms that DNA is the […]
Which one of the following cannot be explained on the basis of Mendel’s Law of Dominance?
Options
(a) The discrete unit controlling a particular character is called a factor (b) Out of one […]
A pleiotropic gene is one which
Options
(a) affects one character (b) affects more than one characters (c) affects more than ten characters (d) does not affect any character
Correct Answer:
affects more […]
The distance between two nucleotides in DNA is
Options
(a) 34 Å (b) 3.4 Å (c) 0.34 Å (d) 20 Å
Correct Answer:
3.4 Å
Explanation:
No explanation available. Be the first to […]
Which of the following is an example of sex-linked inheritance?
Options
(a) night blindness (b) anaemia (c) colour blindness (d) cretinism
Correct Answer:
colour blindness
Explanation:
No explanation available. Be the first to […]
A eukaryotic gene contain two kinds of base sequences. Which of these plays an important role in protein synthesis?
Options
(a) introns (b) exons (c) introns and exons (d) none of these
Correct […]
Constituent of RNA is
Options
(a) adenine, guanine, purine, thymine (b) adenine, guanine, uracil, cytosine (c) adenine, guanine, purine, pyrimidine (d) adenine, guanine, purine, thymine, uracil, cytosine
Correct Answer:
adenine, guanine, uracil, cytosine
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