Why sharing of injection a needle between two individuals is not recommended?
Sharing of injection needles between two individuals is not recommended because it may lead to the transmission of HIV-infection and cause AIDS.
Identify the examples of convergent evolution from the following:
(i) Flippers of penguins and dolphins
(ii) Eyes of octopus and mammals
(iii) Vertebrate brainsName the type of biodiversity represented by the following:
(a) 50,000 different strains of rice in India.
(b) Estuaries and alpine meadows in India.
Why is the enzyme cellulase needed for isolating genetic material from plant cells and not from the animal cells?
An anther with malfunctioning tapetum often fails to produce viable male gametophytes. Give any one reason.
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
Name the enzyme and state its property that is responsible for continuous and discontinuous replication of the two strands of a DNA molecule.