3.28 understand that variation within a species can be genetic, environmental, or a combination of both
Variation in a species is the differences between the members of a species.
Genetic is caused by what genes are inhereted.
Environmental is caused by some action after birth (e.g the sun giving you a tan.)
Some variation is a bit of both...
Genetic variation is caused by genes. Eg: eye colour hair colour inherited disorders (for example, haemophilia) blood group
An example of environmental variation could be that malnourished children have stunted growth.
A combination of genetic & environmental variation accounts for: health (some are more likely to get certain diseases, but lifestyle also affects risk) sporting ability (genes may determine potential, but training is important too)
Genetic variation is caused by genes. Eg:
ReplyDeleteeye colour
hair colour
inherited disorders (for example, haemophilia)
blood group
An example of environmental variation could be that malnourished children have stunted growth.
A combination of genetic & environmental variation accounts for:
health (some are more likely to get certain diseases, but lifestyle also affects risk)
sporting ability (genes may determine potential, but training is important too)
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