BIOs 260 Midterm Exam

EXAM ELABORATIONS Aug 29, 2025
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BIOs 260 Midterm Exam

  • Biology before Darwin
  • –Answer like physics

  • predictable development
  • –Answer idea that if you can understand the way one chick develops you can understand them all

  • darwin vs mendel
  • –Answer darwin = variation exists mendel = variation is discrete

  • how can mendel explain darwin's variation
  • –Answer additive alleles (no dominance)

  • why is it not helpful to sequence the genome of one individual
  • –Answer irrelevant when the person dies variation that exists changes with each generation

  • what causes cystic fibrosis
  • –Answer defect in chloride transporter causes mucous blocking airways in lungs can arise in many different ways

  • what is an allele
  • –Answer variation of a gene

  • what determines CF disease phenotype
  • –Answer 1 / 2

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allele combinations

  • drugs that resolve CF
  • –Answer potentiator - restores channel gating stabilizer - decreases surface protein turnover corrector - improves protein folding + trafficking read-through - suppresses premature stop codons amplifier - stabilizes mRNA

  • what is a gene
  • –Answer function unit heredity that is responsible for a phenotype

  • what did Morgan believe about genes
  • –Answer they are all on the X chromosome

  • what is recombination
  • –Answer new combinations of genes

  • McClintock experiment
  • –Answer exoradiated chromosomes to make them morpholog- ically distinct (parent 1 = hook; parent 2 = knob)

  • F1s crossed and meiotic products observed knob +
  • hook associates with specific genes

  • genetic distance formula
  • –Answer (number of recombinants / total number of progeny) x 100 done with the F2 generation

  • how to calculate the number of recombinants
  • –Answer Recombinants = NDP + 1/2 TT

  • / 2

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Category: EXAM ELABORATIONS
Added: Aug 29, 2025
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SUBSCRIBE BIOs 260 Midterm Exam 1. Biology before Darwin –Answer like physics 2. predictable development –Answer idea that if you can understand the way one chick develops you can understand th...

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