Prokaryotic cells tend to be small, simple cells, measuring around 0.1-5 μm in diameter. While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions. In prokaryotic cells, DNA bundles together in a region called the nucleoide.
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Genetic drift is a process in which allele frequencies within a population change by chance alone as a result of sampling error from generation to generation. Genetic drift is a random process that can lead to large changes in populations over a short period of time.
Strictly speaking, a hominid is considered as a general term corresponding for Homo, Pan and Gorilla. If this pertains to the genus Homo (class Hominini), then we only have one species left called Homo sapiens (modern humans) which developed from the ancestors called Homo erectus or Neanderthals. However, hominid could also mean the gorillas and chimpanzees belonging to another genus called Pan (class Hominini) and Gorilla (class Gorillini), respectively.
You need to collect 50 full length strands of hair from the scalp to use as a sample.
A HEV has an engine that uses electric power as well as gasoline to move. When using the electric motor, there are no CO2 emission from the car. So the overall emission should be lower on a HEV than on a purely gasoline car, since you can choose to only use electric power.