Polyploidy refers to:
AGain or loss of a single chromosome
BInversion of a chromosome segment
CIncrease in a whole set of chromosomes (often due to failure of cytokinesis after telophase)
DSubstitution of a single base in DNA
Answer & Solution
Correct answer: C. Increase in a whole set of chromosomes (often due to failure of cytokinesis after telophase)
**Polyploidy = increase in a *whole set* of chromosomes** (3n, 4n, etc.). Common in plants (many cultivated crops are polyploid). Arises from failure of cytokinesis after telophase of meiosis/mitosis.
Related questions
How many chromosomes are there in a normal human cell?The gain or loss of a single chromosome is called:Turner's syndrome in human females results from the loss of:Down's syndrome results from an extra copy of chromosome:In sickle-cell anaemia the red cell changes from a biconcave disc to a:A heterozygous female for haemophilia is called a:Morgan carried out his crosses using:Who proposed the chromosomal theory of inheritance?