Verified Documents at University of British Columbia
- Genetics, Evolution and Ecology
- University of British Columbia
- Verified Notes
Browse the full collection of course materials, past exams, study guides and class notes for BIOL 121 - Genetics, Evolution and Ecology at University of British Columbia verified …
PROFESSORS
All Professors
All semesters
Bridgette Clarkston
fall
26Ken Savage
fall
3Lam, Vivienne
winter
15Verified Documents for Bridgette Clarkston
Class Notes
Taken by our most diligent verified note takers in class covering the entire semester.
BIOL 121 Lecture Notes - Lecture 2: Ploidy, Chromatid, Karyotype
2136
BIOL 121 Lecture Notes - Lecture 3: Sister Chromatids, Centromere, S Phase
Active time cell either growing and preparing to divide, or doing its specialized function in a multicellular individual. Chromatin: less condensed for
2153
BIOL 121 Lecture Notes - Lecture 4: Sister Chromatids, Nuclear Membrane, Meiosis
290
BIOL 121 Lecture Notes - Lecture 5: Chromosome, Homologous Chromosome, Gamete
Genetic recombination- produce new allelic combination within a chromosome. Meiosis must perfectly execute 2 steps for a gamete to have 1 complete chro
2116
BIOL 121 Lecture Notes - Lecture 6: Punnett Square, Gamete, Zygosity
Thus, each gamete has 1 allele of each gene. Both parents are heterozygous for 2 traits. A gene can have different alleles/ variants (but each gamete o
281
BIOL 121 Lecture Notes - Fall 2018 Lecture 7 - Zygosity, Mendelian inheritance, Meiosis
Genes for seed shape and seed colour assort independently, b/c they are located on different chromosomes. Non-homologous chromosomes assort independent
250
BIOL 121 Lecture 8: BIOL 121: Lecture 8: Bridgette Clarkston
Traits vary among individuals in a population. Individuals with certain traits leave more offspring than others do. Population- consists of individuals
240
BIOL 121 Lecture Notes - Lecture 9: Natural Selection
Random mutations have lead to variation in traits within a population. Heritable variations due to mutations & allele recombination. Individuals with d
270
BIOL 121 Lecture Notes - Lecture 10: Genetic Drift, Allele, Genotype
Focuses on contribution of alleles to a population. Allows quantification of genetic variation in populations. Is a way to measure change in a populati
379
BIOL 121 Lecture Notes - Lecture 11: Natural Selection 2, Allele Frequency, Birth Weight
25. 2 types of natural selection: directional selection. E. g. longer wing, faster running, toward higher metabolism rates (fast metabolizers in fruit
436
BIOL 121 Lecture Notes - Lecture 12: Allele Frequency, Zygosity, Genotype Frequency
3 mechanisms violate hardy-weinberg assumption of random mating: inbreeding, assortative mating, sexual selection. Does not directly cause evolution b/
245
BIOL 121 Lecture Notes - Lecture 13: Natural Selection, Handicap Principle, Role Reversal
Endurance rivalry- male"s reproductive success will be correlated with amount of time he spends copulating at mating site. Sperm competition- male"s re
252
BIOL 121 Lecture Notes - Lecture 14: Genetic Drift, Allele Frequency, Speciation
258
BIOL 121 Lecture Notes - Lecture 16: Sea Urchin, Allele Frequency, Speciation
Biol 121/ lecture 14/ bridgette clarkston: biological species concept: populations are evolutionarily independent if they are nnreproductively isolated
256
BIOL 121 Lecture Notes - Lecture 19: Species Complex, Speciation, Allopatric Speciation
Not applicable to asexual or fossil species; difficult to assess if populations don"t breed & don"t evolutionary produce viable independence do not
258
BIOL 121 Lecture Notes - Lecture 20: Polyploid, Macroevolution, Wild Type
Mutation reduces gene flow between mutant & normal, or wild-type individuals. Why? b/c mutant individuals have more than 2 sets of chromosomes. Occurs
244
BIOL 121 Lecture Notes - Lecture 21: Hominidae, Ardipithecus, Bipedalism
Old world monkeys no prehensile tails (only for balance) or even no tail (found in africa, middle europe) Human"s closest is hominids, or great apes. F
247
BIOL 121 Lecture Notes - Lecture 22: Neanderthal, Homo Sapiens, Homo Erectus
Existed between 230 000 and 24 000 years ago. Modern homo sapiens outside of africa in europe have around 3 to 4% neanderthalensis dna. The average bra
251
BIOL 121 Lecture Notes - Lecture 23: Biome, Mutation, Photosynthesis
Modern human evolution: selection differential reproduction has a, drift (reduced because gene flow has increased, gene flow (increased tremendously, m
243
BIOL 121 Lecture Notes - Lecture 24: Intraspecific Competition, Interspecific Competition
A biological community consists of interacting species, usually living within a defined area. A community lies between the spatial scales of a populati
2206
BIOL 121 Lecture Notes - Lecture 25: Mutation, Selective Breeding, Brassica Oleracea
Principle by which each slight variation [of a trait], if useful, is preserved . Conclusion 1: struggle for existence leads to differential survival an
247
BIOL 121 Lecture Notes - Lecture 26: Allele Frequency, Disruptive Selection, Stabilizing Selection
249
BIOL 121 Lecture Notes - Lecture 27: Allele Frequency, Genetic Drift, Panmixia
272
BIOL 121 Lecture Notes - Lecture 29: Allele, Mutation
287
BIOL 121 Lecture Notes - Lecture 31: Sperm Competition, Anisogamy, Handicap Principle
Difference in form or traits between the sexes of the same species. Different investments produce different gametes (anisogamy- different size between
294
BIOL 121 Lecture Notes - Lecture 35: Commensalism, Great Bear Rainforest
3253