Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Dosa and Idli are fermented preparation of rice and black gram. The fermentation is done with

Which was discovered by Alexander Fleming ?

Assertion : In morula stage, cells divide without increase in size.

Reason : Zona pellucida remains undivided till cleavage is complete.

Assertion : Darwin's finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds.

Reason : Ancestral seed-eating stock of Darwin's finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitats.

Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino?

Mountain sickness is due to

Haploid plant cultures are got from.

In grass-deer-tiger food chain, grass biom- ass is one tonne. The tiger biomass shall be:

Pollination is best defined as

In genetic coding, triplet codons make possible 64 types of codons. If the genetic code was a doublet instead of a triplet codon, the number of types of codons possible would be: