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

Which of the following is a vestigial organ?

. . . . . . . . is a scientific discipline concerned with the study of plant pollen, spores and certain microscopic planktonci organisms, in both, living and fossil form.

Alterations of DNA involving only one, or only a very few, nucleotides are called

The removal of stamens from the female parent before they burst and have their pollens is called

If a dominant gene A is lost in a deletion, then the recessive gene a will express itself.
This expression of a recessive trait is called

Consider the following statements regarding the origin of polyploidy and choose the correct answer:
1. The egg may be fertilized by more than one sperm
2. There may be a failure of mitosis
3. Triploids may arise as a result of fertilization of unreduced gametes
4. An autotetraploid may arise either by the doubling of chromosomes or fertilization between two different gametes

Autopolyploidy can be induced artificially by the use of a chemical called

Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively

The characteristics of 'The chromosome theory of linkage', formulated by Morgan and Castle, include:

The relationship between the sequence of bases in DNA / RNA and the sequence of amino acids in a polypeptide chain is called the