Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Why is the enzyme cellulase needed for isolating genetic material from plant cells and not from the animal cells?

AaBb was crossed with aabb. What would be the phenotypic ratio of the progeny? Mention the term to denote this kind of cross.

Give the initiation codon for protein synthesis. Name the amino acid it codes for.

What is gene gun (biological)? Write one use of it.

Name one amino acid, which is coded by only one codon.

Name an IUD that you would recommend to promote the cervix hostility to sperms.

What is the main reason for the extinction of passenger pigeon?

State the functions of mast cells in allergy response.

Identify True/ False statements. Correct each false statement to make it true.
Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/ False)

Name the two major groups of cells required in attaining specific immunity.