Macronuclear "nanochromosomes"; ampliploid. Scientific Reports. Namespaces Article Talk. BMC Genetics. Views Read Edit View history. Edible frog is the fertile hybrid of the pool frog and the marsh frog. Cytogenet Genome Res.
December Concept 9: Specialized chromosomes determine gender. Hyraxes were considered to be the closest living relatives of elephants but sirenians have been found to be more closely related to elephants.
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Animal Genome Size Database. No, Walther Flemming did think that chromosomes exist as one long piece that broke up during mitosis, but this is not true. This is the haploid number. Mardis; Laura F.
Somatic cells , tissues , and individual organisms can be described according to the number of sets of chromosomes present the "ploidy level" : monoploid 1 set , diploid 2 sets , triploid 3 sets , tetraploid 4 sets , pentaploid 5 sets , hexaploid 6 sets , heptaploid  or septaploid  7 sets , etc. The generic term polyploid is often used to describe cells with three or more chromosome sets.
Image credit: Hereford cattle graze on the U.
Sex chromosome abnormalities may be caused by full or partial deletions or duplications of sex chromosomes.
Each "human body cell" has 46 chromosomes. But human sex cells have 23 unpaired chromosomes in each cell.
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Atlas of mammalian chromosomes. Stanford University Press. BMC Genomics.