Evolution and gene pool Flashcards

(9 cards)

1
Q

why an individual organism cannot evolve

A

An individual cannot evolve because evolution happens over many generations in a population, not within one lifetime.
Only genetic changes (allele frequency shifts) in a population count as evolution

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2
Q

define evolution

A

Evolution is the change in the frequency of alleles in a population’s gene pool over time.

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3
Q

define a population

A

A population is a group of individuals of the same species living in the same area.

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4
Q

define a gene

A

A gene is a section of DNA that contains the instructions for making a specific protein

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5
Q

define an allele

A

An allele is a different version of a gene. (blue,brown eyes)

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6
Q

define a gene pool

A

A gene pool is the total collection of all the alleles present in a population.

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7
Q

genetic diversity defintion

A

if a population has biodiversity: a large amount of alleles avalibable

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8
Q

what is convergent evolution

A

the process where distantly related organisms independently evolve similar traits, behaviors, or body shapes as adaptations to comparable environmental pressures

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9
Q

Why is there such a variety of life

A

Natural selection has created the variety of species on Earth. As it selects individuals who have advantageous traits, they thrive and pass on their genes. Natural selection is influenced by environmental changes, predation, disease and competition for resources. Therefore, creating many variations of species depending on their population threats and availability of resources.

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