Strategies for Enhancement in Food Reproduction — BIOLOGY STD 12 Science — Question

When a tall pea plant was self-pollinated, one-fourth of the progeny were dwarf. Give the genotype of the parent and the dwarf progenies.

State the fate of a pair of autosomes during gamete formation.

When does the ozone hole develop over Antarctica every year?

Name the technique that is used to alter the chemistryof genetic material (DNA/ RNA) to obtain the desired result.

In the following pedigree chart, state if the trait is autosomal dominant, autosomal recessive or sex linked. Give a reason for your answer.

Name the tissue which lines the inner surfaces of fallopian tube.

Thymus of a new born child was degenerating right from birth due to a genetic disorder. Predict its two impacts on the health of the child.

Name the technology used for crop improvement

Explain the reason why the place of injury turns red.

Name the historic convention on biological diversity held at Rio in 1992.