Species diversity

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studywithem4

Cards (10)

Define species diversity. 
The number of different species and the number of individual species of each within a community
What does species diversity allow?
Allele frequency can be observed, along with the adaptations over time
This allows us to then investigate their selection and see if it was directional or stabilizing
Allowing us to investigate the possibility of a genetic bottleneck or the founder effect.
How is biodiversity being affected?
Through human activity and climate change
Define ecosystem diversity.
The range of different habitats in a particular area
Simpsons Index: $d =$ $N(N-1) / ∑n(n-1)$
What does a high number from the Simpson Index mean?
A greater species diversity and a more stable ecosystem.
How can we investigate biodiversity using DNA bases?
DNA bases change largely due to mutations
Over time new species will show greater differences in their DNA due to new sequences
Closely related organisms share more similar base sequences
How can we investigate biodiversity using mRNA bases?
Protein base sequence can be observed
Comparisons between mRNA base sequences can show how closely a species relation is
How can we investigate biodiversity using amino acids?
Number of similarities or differences in the sequence can be determined
Related organisms have similar base sequences which can be observed within their DNA
How does immunological comparison happen?
Species B is injected with a serum containing the protein albumin from Species A
Species B produces anti-species A antibodies against the protein, responding to specific antigens on the protein in the blood serum
When the antibodies are mixed with the serum the antigen and antibodies shouldn't mix if not related