Human Reproduction — BIOLOGY STD 12 Science — Question

Name one infectious and one non-infectious disease that is the major cause of mortality.

A fish is used for eradication of a vector. Name the fish and the vector.

What is the stalk of ovule called?

Name the first restriction endonuclease discovered.

A geneticist interested in studying variations and patterns of inheritance in living beings prefers to choose organisms for experiments with shorter life cycle. Provide a reason.

A garden pea plant:

1. Produced inflated, yellow pods and another plant.
2. Of the same species produced constricted, green pods. Identify the dominant traits.

In which direction is the new strand of DNA synthesised during DNA replication:

How is a polypeptide chain synthesis terminated during protein synthesis?

Mention the pollinating agent of an inflorescence of small dull-coloured flowers with well exposed stamens and large feathery stigmas. Give any one characteristic of pollen grains produced by such flowers.

What are baculoviruses?