Gentics And Evoloution - Study Mode
[#191] The frequency of crossing over is
Correct Answer
(B) Directly proportional to the distance between the two genes
[#192] 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 CO 2 , CO, H 2 and NH 2 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
Correct Answer
(A) Only 1, 2 and 3 are true
[#193] Formation of root or shoot from the tumour depends on the
Correct Answer
(A) Ratio between the amounts of root-growth female parent and shoot-growth hormones in the cell
[#194] It is believed that, life was restricted to seas alone upto
Correct Answer
(B) Ordovician period
[#195] Who is responsible for the sex determination of a child?
Correct Answer
(A) Father