Introduction to Biodiversity Flashcards

1
Q

What is the Nature emergency?

A

The rate at which species are becoming endangered and becoming extinct.

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2
Q

What are the major threats to biodiversity?

A

1- Habitat degradation
2- Overexploitation
3- Invasive spp. and disease
4- Pollutions
5- Climate change

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3
Q

What is biodiversity?

A

Variability among living organisms from all sources. Diversity within a species can be genetic and cultural (e.g., social teachings).

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4
Q

Where does genetic diversity come from?

A

A random mutation which generates diversity within a population.
Selected phenotypes that are best-adapted change allele frequencies.

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5
Q

How does reproductive isolation take place?

A

Genetic, geographic isolation, and gradual differences in phenotypic traits (e.g. visual, chemical, genitalia, etc).

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6
Q

What is the Cessation of gene flow?

A

the Allowance for species to evolve independently.

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7
Q

How does Specialisation take place?

A

Occurs through the accumulation of several traits.

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