yeah an extra pairOK, so in other words, trisomy is an extra chromosome on any of the 23 sets of chromosomes? Also, when you say "extra set of chromosomes", does it mean a pair of chromosomes?
polyploidy in an organism means that twice the number haploid number of chromosomes e.g. An organisms that possess two sets of each chromosome. For instance, a human has twenty three pairs of chromosomes, the pair meaning that humans are diploid. This doubles our chromosome compliment to forty six.I get what trisomy is now. But can you explain polyploidy with more detail? I'm still unsure of what it is. About the dominant/recessive question, I was asking about defects, not mutations. Haha.
noSo technically, trisomy is polyploidy in one set of chromosome?
yes. in normal humans there are 2 pairs of each of the 23 chromosomes making 46 all up. polyploidy is where there is more than 2 copies of every single chromosome. e.g. 3 lots of every chromosome totaling in 69 chromosomes.so polyploidy is like having 3 or more chromosomes for all 23 sets of chromosomes?