(i) The phenotypic ratio of incomplete dominance is _____________.
(a) 2 : 1
(b) 1 : 2 : 1
(c) 1 : 1 : 1
(d) 1 : 1 : 2
The number of purines in a segment of DNA molecule is 68. What will be the number of pyrimidines in this segment?
Alcoholic fermentation is brought about by _____________.
Which of the following is not a photosynthetic pigment?
Pyruvate undergoes oxidative decarboxylation to produce _____________.
Which day is observed as ‘World Environment Day’?
(a) 21st May
(b) 5 th June
(c) 25th September
(d) 13th December
What is test cross?
What is mycoherbicide?
What is Anticodon?
What is Humification?
How CO2 makes idlies puffy?
What is ecological succession?
Enlist the advantages of Biogas
Explain ‘Carbon cycle’.
Define r-DNA technology.
Give the basic steps in r-DNA technology
Give any ‘three’ examples of the therapeutic products produced by r-DNA technology?
If centromere is situated in the middle of the chromosome, it is called ________.
Which one of the following is useful in treatment of burns and wound healing?
(a) Tissue plasminogen activator
(b) Tissue growth factor
(d) Bovine growth hormone
Erythroblastosis foetalis is caused when mother is ______.
(b) With antibody ‘A’
(d) With antibody ‘B’
Deposition of fatty substances in the lining of arteries results in ______.
Struggle between cow and cow for getting grass is called ________.
(a) Inter-specific struggle
(b) Environmental struggle
(c) Struggle against natural calamities
(d) Intra-specific struggle
In which type of adaptation, forelimbs are modified into wings?
(a) Aquatic adaptations
(b) Volant adaptations
(c) Arboreal adaptations
(d) Cursorial adaptations
Mating of two closely related individuals within the same breed is called ______.
Define organic evolution.