Ecosystems — BIOLOGY STD 12 Science — Question

How many division generally, occuss in female gametophyte of angiosperms:

A sample of normal double-stranded DNA was found to have thymine content of 27%. What will be the expected proportion of guanine in this strand?

The process of formation of ova is called:

What are the DNA sequences that code for protein known as?

Bt cotton is used to destroy

Cell division or mitosis is a normal process in a living cell, but sudden and abnormal mitosis in an organ will frequently result in a

Biogas is a mixture of inflammable gases like

Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The component causing this could be:

While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?