ANHB1101 Lecture : lecture-notes-evolutionary-genetics

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anga

8 Feb 2022

School

UWA

Department

Anatomy and Human Biology/Anatomy, Physiology and Human Biology

Course

ANHB1101

Professor

John

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Document Summary

Genetics of evolution o darwin descent with modification o today genetic change over time. Genetics of variation o within and between organisms. Study of the patterns and causes of genetic variation. In genetic terms, source of variation is a mutation (ie, change in the dna, producing an altered gene (allele) Evolution is a change in allele frequency (variation) over time. Genetic variation exists with and between organisms. There are different types of genetic variation (snp can result in synonymous or nonsynonymous changes) Human hapmap and 1000 genomes project is increasing our knowledge on genetic variation in different human populations. Changes in allele frequency can occur due to evolutionary forces. Tga (stop: length polymorphism (indel, copy number variation, chromosome inversion/genome duplication major shift in genome, results in death. Has two alleles: a (normal), s (sickle cell) this is called single cell variant lomoar cpsd| 7772177 if you have one copy of sickle cell allele you have resistance to malaria.

Related Questions

A population of ocotillo plants has four alleles at the Dopa locus, with allelic frequencies of 0.38, 0.32, 0.19, and 0.11, and the genotype frequencies roughly consistent with the Hardy-weinberg equilibrium. This is a description of the genetic........of the population.
select one:
a) fitness
b) structure
c) monomorphism
d) ratchet
e) none of the above

In 1908 Hardy and Weinberg published papers showing that the binomial or multinomial could be applied in genetics to predict the frequencies of genotypes when allele frequencies where known. The formal algebraic proof of this Hardy-Weinberg Equilibrium Law assumes that there is no mutation in the population. This assumption is necessary, because a. organisms reproduce sexually and litter or family sizes vary. b. populations will exhibit random sampling changes in allele frequency. c. populations are not infinite and the Hardy-Weinberg proof is only a very crude approximation when natural selection is acting. d. populations are not closed and reproduce both sexually and asexually so an infinite size population is required to preserve genetic variation. e. allowing alleles to change would alter their frequencies.

amethystcrab894

A) What is microevolution and how would you contrast microevolution with macroevolution?

B) â¢What does it mean to say, âindividuals are selected, but populations evolveâ?

C) â¢What is the smallest unit of evolution? What is a population? What is the modern synthesis? How has it contributed to our understanding of evolution?

d): Genetic variation makes evolution possible. â¢Why is genetic variation so important to evolution?

E) Explain how mutations are the ultimate source of new alleles. â¢How does sexual recombination produce variation?

ANHB1101 Lecture : lecture-notes-evolutionary-genetics

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