Gentics and Evoloution MCQ question and answer with solution | Biology Gk MCQs

How many pairs of contrasting characters in pea were selected by Mendel?

In proteins the amino acids are linked up by which of the following bonds to form long chains?

Down's syndrome is characterised by

The frequency of crossing over is

Consider the following statements regarding the formation of micromolecules and choose the correct answer:
1. The molecules which have molecular weight below 100 daltons are called micromolecules
2. According to Miller (1965), most of the glycine and many amino acids were formed from CO₂, CO, H₂ and NH₂ in gaseous state due to electric discharge
3. Purines and pyrimidines are thought to be originated from hydrogen cyanide in the primitive earth due to condensation reactions in the presence of heat or radiations
4. Pyrroles, the probable precursors of porphyrins, were likely formed at a very late stage of chemical evolution due to speculated reaction between ethylene and acetylene

Formation of root or shoot from the tumour depends on the

It is believed that, life was restricted to seas alone upto

Who is responsible for the sex determination of a child?

The one-gene one-enzyme hypothesis was proposed by

Darwin's pangenesis hypothesis assumed that all the organs and perhaps all the cells, in the body of an animal produced miniatures of themselves known as