EVOLUTION
EVOLUTION OF A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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having more than two copies of each chromosome
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having just one copy of each chromosome
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having extra chromosomes from a completely different species
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having some duplicated chromosomes
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Detailed explanation-1: -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-2: -Polyploid individuals have multiple copies of each set of chromosomes. Humans are diploid with two sets of chromosomes, while taxa with three sets are called triploids, four sets are tetraploids, and so forth.
Detailed explanation-3: -A haploid cell (n) has 23 chromosomes (typically in the ovum or sperm). If a cell’s chromosomes are an exact multiple of 23 (46, 69, 92 in humans), those cells are referred to aseuploid. Polyploid cells are euploid cells with more than the normaldiploid number of 46 (2n) chromosomes: 3n, 4n.
Detailed explanation-4: -There are mainly two types of polyploidy-autopolyploidy and allo(amphi)polyploidy. There are various types under each of these major divisions.
Detailed explanation-5: -Polyploidy (whole-genome duplication; WGD, see glossary), defined as having three or more sets of chromosomes, influences organisms in all clades of eukaryotic life and all levels of biological organization, from genes to cells to entire ecosystems (Fig.