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 …
Category: Science
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 …
Differentiate between grazing food chain and detritus food chain.
Grazing food chain 1.depicted as grass —goat — man 2.Begins with producers / autotrophs. All animals depend on plants for their food Read More …
Differentiate between an upright and inverted pyramid.
Upright pyramid 1. Producers are more in numbers than the herbivores and herbivores more in number than carnivores. 2. Pyramid of energy is Read More …
Describe the process of transcription in bacteria.
RNA polymerase binds to the promoter and initiates transcription (initiation). It uses nucleosides triphosphates as substrate and polymerises in a template dependent fashion following Read More …
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