Unit 3-topic 1 Biodiversity and populations
what is biodiversity
diversity of living things
symbiotic relationship where one species eats another
predation
4 bases of DNA
guanine, cytosine, adenine, thymine
Natural selection
certain traits are more advantageous to a species survival- they survive and reproduce
Mr. Lees' favorite animal
Tiger
biological species concept
2 individuals that are capabale of producing fertile offspring. (limitations though)
niche
species role in the ecosystem
helicase
breaks hydrogen bond and "unzips" DNA strand
species most closely related to species I
species V
"at least.......
make it look like you're working"
r-strategists
short lifespans, many young, few surviving, early maturity, minimal to no parental care
secondary succession
something happens to the ecosystem and it recovers and develops from there. primary starts from scratch
X linked inheritance for an affected mother and unaffected father- ratios
2 female carriers and 2 affected males
stabilising selection
both extremes of trait are picked against- more "average"
how many 50/50s are in our class
4
hierarchy of linnean classification
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
how much energy is transferred at each trophic level (average)
~10%
polymerase chain reaction (PCR)
makes copies of a DNA sample
convergent evolution
2 species not related, develop similar traits
how many students were in this class at the start of yr 11 last year
20
simpsons diversity index
the chance to animals selected at random will be different. double for correct formula
how atmospheric N2 is converted in nitrogen cycle
bacteria or lightning
HOX transcription factor
regulate what parts go where on the body
Parapatric speciation
community on edge of population, different niche
what event was on while Mr. lees was drafting your IA3s
tour de france