Adaptive Radiation (divergent evolution) - Multiple species off of original species
Certain members of the species exploit a different niche of their ecosystem
Alexander flemming - Scientist was first to notice mold and noticed that all bacteria around the
mold was dead. This lead to massive pro...
IB Biology SL Evolution Exam / Revised
Questions and Answers / Sure A+
Adaptive Radiation (divergent evolution) - Multiple species off of original species
Certain members of the species exploit a different niche of their ecosystem
Alexander flemming - Scientist was first to notice mold and noticed that all bacteria around the
mold was dead. This lead to massive production of pennisullin
Allele Frequencies - Measure of the proportion of a specific variation of a gene in a population
Analogous structure: - structures may have same function but different internal structures
Antibiotics - - medication that kills or inhibits the growth of bacteria
Asexual(bacteria) versus Sexual reproduction - Evolution works best if there is a variation within
the species (sexual reproduction)
This can lead to new traits which can benefit an organism
Behavioral - One populations lifestyle or habits are not compatable with another population
Charles Darwim - created the theory of evolution by natural selection
Conversion Evolution - Aquiring the same biological traits (analogous structure) which are not due
to heredity: structures may have same function but different internal structures
Directional Selection - 1.Phenotype is favored over others by natural selection
2.Phenotype will increase over time
3.Other phenotype will decrease
, Disruptive Selection - When two extreme phenotypes are favored rather than an intermediate
Explain evolution of a species by natural selection in response to environmental change (8 marks). -
1.Over population of offspring
2.Survival of the fittest or natural selection
3.Resources are limited
4.Struggle to survive
5.Change gene frequencies
6.Variation is inherited
7. Species shows variation
8.Cause species to gain new adaptation
Function of RNA - Store information
And has function can keep the DNA alive by making proteins
Gene Pool - All the genes and their different alleles of an interbreeding population
Genus Allium - Onions, shallots, leeks, and garlic
Shows polyploidy
Geographical - Physcial location that prevent males and females from mating with eachother
Hardy Weinberg Equation - p+q=1
Horizantal Gene transfer: - Same as plasma transfer
When bacteria are in a physiological state and transfer
Passing viruses
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