AP BIOLOGY

Detailed explanation-1: -Polyploidy is a heritable condition where an organism contains more than two complete sets of chromosomes. Polyploidy arises as a result of nondisjunction in human cells. Nondisjunction happens when members of a pair of homologous chromosomes fail to separate during meiosis. In humans, this condition is lethal.

Detailed explanation-2: -Polyploidy is the heritable condition of possessing more than two complete sets of chromosomes. Polyploids are common among plants, as well as among certain groups of fish and amphibians. For instance, some salamanders, frogs, and leeches are polyploids.

Detailed explanation-3: -Newly formed polyploid organisms, that cannot overcome the genome instability, or have lowered survival and/or reproduction, may perish and become an ‘evolutionary dead-end’. In this case, polyploidy could be considered a catastrophic phenomenon.