2272989
Description
Mind Map by rebeccachelsea, updated more than 1 year ago
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Created by rebeccachelsea
over 9 years ago
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Variation
- Genes
- Characteristics are determined
by the genes inherited from its
parents, some from the mother
and some from the father.
- Combination of genetics causes
variation so no two are genetically
identical
- It is also due to genetic
mutations.
- Some characteristics are determined
solely by genetics (e.g. blood type and
inherited disorders like cyctic fibrosis
and haemophilia.
- Characteristics are determined
by the genes inherited from its
parents, some from the mother
and some from the father.
- Environment
- Occurs over a wise range of
differences (e.g. sun tan or
getting yellow leaves).
- Factors include diet,
exercise, temperature, light
level and water volume.
- Occurs over a wise range of
differences (e.g. sun tan or
getting yellow leaves).
- Continuous
- When the individuals within a
population vary within a certain
range with no distinct categories
- For example humans mass, E.
coli width or number of leaves
on tree.
- Graph takes the place of a
normal distribution curve
where the curve is symmetrical
around the mean.
- When the individuals within a
population vary within a certain
range with no distinct categories
- Discontinuous
- Where there are 2 or more
distinct categories and each
individual only falls into one
of the categories, there are no
intermediates.
- For example blood group,
whether bacteria are
antibiotic-resistant or not and
courgette colour.
- Graph is a bar graph (bars don't touch).
- Where there are 2 or more
distinct categories and each
individual only falls into one
of the categories, there are no
intermediates.
- Most characteristics are
determined by a mix or genetic
and environmental factors (e.g.
body weight, height, skin colour).
- For example, a plant's maximum
height is caused by genes but
whether or not it reaches that
height depends on the
environment in which it grows.
- For example, a plant's maximum
height is caused by genes but
whether or not it reaches that
height depends on the
environment in which it grows.
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