Gases found in primitive atmosphere are
CH4, NH3, H2, H2O (vapour form)
CH4, NH3, CO2, H2O
CH4, H2O, CO2
CH4, O2, CO2
Sertoli cells are found in testis. These cells are
nurse cells
reproductive cells
receptor cells
None of the above
Species can be identified on the basis of
interbreed
species diversity
reproductive isolation
None of the above
Covered smut of barley is caused by
Ustilago hordei
Tilletia caries
Ustilago nudo
Colletotrichum falcatum
Ozone depletion in stratosphere would result in
forest fires
global warming
skin cancer incidence
None of the above
1 : 2 : 1 phenotypic and genotypic ratio is found in
complementary genes
blending inheritance
multiple alleles
pseudo alleles
B.
blending inheritance
Incomplete dominace or blending inheritance was first seen in Mirabilis jalapa (4' O Clock plant). Here, when red flowers are crossed with white variety, the F1 hybrid is pink and F2 ratio is 1 red : 2 pink : 1 white.
RR : Rr : Rr : rr
1 : 2 : 1 - Genotypic and Phenotypic ratio
The back bone of RNA consists of which of the following sugar?
Deoxyribose
Ribose
Sucrose
Maltose