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Exam (elaborations)

2024 BIO 1108 UCONN FINAL EXAM WITH CORRECT ANSWERS

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  • BIO 1108 UCONN
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  • BIO 1108 UCONN

2024 BIO 1108 UCONN FINAL EXAM WITH CORRECT ANSWERS

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  • August 3, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • genetic variation
  • 2 examples of drif
  • BIO 1108 UCONN
  • BIO 1108 UCONN
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2024 BIO 1108 UCONN FINAL
EXAM WITH CORRECT
ANSWERS

_________ are much more variable than humans - CORRECT ANSWERS-fruit
flies

patterns of genetic variation can be described by ____________ - CORRECT
ANSWERS-allele frequencies

What can cause genetic variation? - CORRECT ANSWERS-a mutation

two types of mutations - CORRECT ANSWERS-somatic and germ line

mutations can be ___________ - CORRECT ANSWERS-deleterious, neutral, or
advantageous

Fruiting bodies are the structures we call ______________ or mold - CORRECT
ANSWERS-mushrooms

fungi have no _____ per se., the mating type is determined by a mating type
gene - CORRECT ANSWERS-sex

In this mutualism, the fungus gives the plant access to water and minerals,
and the plant gives the fungus sugars that it makes from photosynthesis -
CORRECT ANSWERS-glomeromycota

__________ are mutualistic associations between an ascomycete fungus and
agreenalga(orcyanobacterium) - CORRECT ANSWERS-lichens


genetic variation - CORRECT ANSWERS-refers to differences in DNA
sequences


recombination - CORRECT ANSWERS-gives new combinations not present in
the parent population

, allele frequency - CORRECT ANSWERS-# of copies of an allele / total # of
alleles in a population

What is the frequency of a in this population?

50% aa 25 % Aa 25% aa - CORRECT ANSWERS-62.5%

Evolution - CORRECT ANSWERS-a change in the frequency of alleles or
genotypes in a population over time

How do we measure "change" in the frequency of alleles or genotypes in a
population over time? (3 methods) - CORRECT ANSWERS-- observable
physical traits
- relative size of genes (gel electrophoresis)
- specific genetic code (DNA sequencing)

What is our baseline to compare against when determining if evolutionary
change is significant? - CORRECT ANSWERS-Hardy-Weinberg Equilibrium
Model

Conditions of HW Equilibrium (five) - CORRECT ANSWERS-- no differential
survival or reproductive success of individuals
- no migration
- no mutation
- large population size
- no mate choice

Natural Selection leads to __________ , which enhance the fit between an
organism and its environment - CORRECT ANSWERS-adaptations

Natural selection can be ___________, ____________, or _____________ - CORRECT
ANSWERS-positive, negative, or balancing

natural selection - CORRECT ANSWERS-the change in an allele's frequency
over time based on that particular allele's impact on survival and
reproduction

Natural selection occurs when individuals with certain traits ____________
________ ____________ than do individuals without those traits. - CORRECT
ANSWERS-produce more offspring

heterozygote advantage - CORRECT ANSWERS-case where the fitness of the
heterozygote is superior to that of the homozygote

3 kinds of natural selection - CORRECT ANSWERS-stabilizing selection,
directional selection, disruptive selection

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