Histamine.
Category: Class 12
Explain how human insulin is produced using recombinant DNA technique.
Insulin consists of two short polypeptide chains: chain A and chain B, that are linked together by disulphide bridges. In humans, insulin is synthesised Read More …
What is a palindrome in a DNA? Describe the role of restriction enzymes on palindrome.
A palindrome in DNA is a sequence of base pairs that reads same on the two strands when orientation of reading is kept the Read More …
Give an account of adaptive radiation with an example from the Galapagos Islands.
The process of evolution of species in a given habitat (geographical area) starting from a point and radiating to other habitats is called Adaptive Read More …
A population census report 2009 – 2010 shows that a major section of the Goan population has migrated to western countries . Predict the effect on the Hardy – Weinberg equilibrium.
The Hardy – Weinberg equilibrium will change.
An alien piece of DNA in an organism needs to be linked to the origin of replication . Why?
The origin of replication is responsible for initiating replication.
In Ramu ‘s field , at Amona , small birds were often seen sitting on the backs of grazing cattle and pecking . Identify the type of interaction : a) Commensalism b) Mutualism c) Parasitism d) Predation
Mutualism.
Choose the correct alternative and rewrite: A. Restriction enzymes belong to a class of enzymes called : a) Proteases b) Chitinases c) Nucleases d) Cellulases
c) Nucleases
In an experiment on monohybrid cross a geneticist crossed dominant homozygous white mice with homozygous black mice . Using the punnet square , work out F1 & F2 generations and derive the phenotypic and genotypic ratio
Phenotypic ratio : All White, All Genotypic ratio : All Ww
A child has blood group O. If father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings. Identify the type of inheritance.
Therefore the genotype of the parents is IA i & I B i The other offsprings will be – AB, B, A, O. Read More …
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