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MBG 2040 University of Guelph with 100- correct answers 2025. $15.49   Add to cart

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MBG 2040 University of Guelph with 100- correct answers 2025.

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  • MBG*2040
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  • MBG*2040

MBG 2040 University of Guelph with 100- correct answers 2025.

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  • October 29, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MBG*2040
  • MBG*2040
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MBG*2040 University of Guelph
with 100% correct answers
2025
hemizygous - answer - only one copy of each gene that resides on the X-
chromosome will be present in the individual
- males are hemizygous


allopolyploid - answer - created by hybridization between species
(usually related)
- expect a crisis or loss of progeny
- plants are more tolerable to crossbreeding/ pollination


plant polyploids - answer -many are sterile due to problems with pairing
and separation
- many seedless plants are polyploids


paracentric inversion - answer - excludes centromere
- possible causes include; X-rays, transposons
- chromosome rearrangement


map distance - answer - distance between genes
- (# of recombinants /total # of offspring) x 100 = map units


SRY gene - answer -"sex region on the Y-chromosome"
- determines differentiation -> produces testis
- XX males have SRY gene on an X chromosome


complete penetrance - answer - if you carry the allele it will be expressed

, - identical known genotypes yield 100% expected phenotypes


epistasis - answer - indication that two genes are involved in different
steps of the same process
- recessive (9:7)
- dominant (12:3:1)


euchromatin - answer - transcribed portion of the genome


calico cats - answer - barr body
- gene on X-chromosome ("orange") determines fur colour O = orange, o =
black
- females carrying O are mosaic
- males are either black or orange


2:1 - answer - monohybrid
- recessive lethal allele


frequency of recombination - answer - (# of recombinants / # of
recombinants + # of parentals)


complete dominance - answer - the phenotype BB has the same
phenotype as Bb but both are different from bb
- rare
- dominant allele (B) always eclipses the recessive allele (b)


codominance - answer - BB, Bb, and bb are all phenotypically different
but Bb exhibits phenotypes of both homozygotes
- no 3:1 distribution
ex. blood type

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