Variation Flashcards

(37 cards)

1
Q

What is a variation

A

Differences in organisms

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2
Q

How many types of variations are they and what are they

A

Continuous variation
Discontinuous variation
Genetic variation
Enviroment variation

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3
Q

What is continuous variation

A

A feature that changes gradually over a range of value e.g height or weight

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4
Q

What is a discontinuous variation

A

You fit into one group or another and the feature doesn’t change during your lifespan e.g. hair colour, eye colour, blood type

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5
Q

What is discontinuous variation controlled by

A

Controlled by genes only

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6
Q

What is continuous variation controlled by

A

Controlled by genes and environment

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7
Q

What is environment variation

A

The environment conditions that an organism lives and grows in causes differentiation between organisms

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8
Q

What is genetic variation

A

Are characteristics that are determined by the genes inherited from their parents

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9
Q

What is a advantage and disadvantage of asexual reproduction

A

Advantage- only one parent needed and all offspring’s are clones
Disadvantage- no variation between offspring

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10
Q

What is and advantage of sexual reproduction

A

Advantage- variation between offspring
Disadvantage- need two parents, mutations

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11
Q

What is sexual reproduction

A

Sexual reproduction is when two parents create offspring with a mix of their genes.

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12
Q

What is asexual offspring

A

Asexual reproduction creates offspring that are genetically identical to a single parent.

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13
Q

What is an advantage and disadvantage of sexual reproduction

A
  • Good: Variety in offspring.
  • Bad: Needs two parents
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14
Q

What is asexual reproduction advantage and disadvatage

A
  • Good: Fast reproduction.
  • Bad: Offspring all the same.
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15
Q

What is variations

A

Differences in organisms

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16
Q

What is continuous variation

A

A feature that changed gradually over a range of value

17
Q

Give me an example of continuous variation

A

Height, weight

18
Q

What is continuous variation controlled by

A

Genes and environment

19
Q

Wha dis discontinuous variation

A

You got into one group or another and the feature doesn’t change during your lifespan

20
Q

Give me and example of discontinuous variation

A

Hair colour, blood type, eye colour

21
Q

What is discontinuous variation controlled by

A

Controlled by genes only

22
Q

Define the term mutation

A

A random change in the sequence of DNA

23
Q

Define survival of the fittest

A

Having an advantage over other organisms allowing you to survive

24
Q

What is the scientist responsible for evaluation

A

Charles Darwin

25
What is genetic variation
Are characteristics that are determined by the genes inherited from their parents
26
What is environmental variation
The environmental conditions that an organisms lives and grows in causes differentiation between organisms
27
The differences in the way looks and behaves
Variation
28
What variation shows where an individual can be anywhere along a range of variation
Discontinuous variation
29
3 examples of continuous variation
Weight height skin colour
30
3 examples of environmental variation
Scars, language spoken, affect if sunlight on skin
31
What reproduction involves fertilisation from 2 parents
Sexual reproduction
32
What repro diction involves only one parent
Asexual reproduction
33
What is a genetic mutation
A random change in the dna sequence
34
What is a recessive disorder
A genetic disorder that only appears when an individual has two copies of a mutated gene
35
What does extinct mean
No longer existing
36
What is a person that has CF and doesn’t have CF
Hasn’t- BB or Bb Has- bb
37
Name me the 6 marker on evaluation
1. All ( type) show variation caused by a mutation in there gene. 2. Some have (benefit) and some don’t not 3. The ones with the ( benefit) were able to survive whereas the ones without (benefit) could not. 4. This is known as survival of the fittest the ones with (benefit) were able to breed and pass on the (benefit) gene to their offspring 5. This continues over generations increasing the number of individuals worth beneficial gene in a population.