12. View the proportion of flies from your data that indicate crossover occurred (VG and BL flies) and multiple it by 100. Based on your data, how far apart are these alleles?
12. View the proportion of flies from your data that indicate crossover occurred (VG and BL flies) and multiple it by 100. Based on your data, how far apart are these alleles?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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pls answer only item no. 12. thaank uu!!

Transcribed Image Text:•We mate the female from the offspring with male with Vestigial wings
and black body color (GgBb X ggbb)
X ggbb
GgBb
Gamete: GB, Gb gB, gb X gb, gb, gb, gb
GB
Gb
gB
gb
F1 progeny-
gb
GgBb
Ggbb
ggBb
ggbb
gb
GgBb
Ggbb
ggBb
ggbb
gb
Ggbb
ggBb
ggbb
gb
GgBb
Ggbb
ggBb
ggbb
Progeny
Genotype
4-GgBb
4-Ggbb
4-ggBb
4 - ggbb
Phenotype
Wild Type
Black Body
Vestigial Wings
Vestigial Wings, Black
Body
Observed
Phenotype
Wild Type
Black Body
Vestigial Wings
Vestigial Wings, Black Body
Proportion
4/16= 1/4
4/16= 1/4
4/16= 1/4
4/16= 1/4
4.
4.
4.

Transcribed Image Text:Part 5: Linkage Groups
When two alleles are located on the same chromosome they are inherited together. However, crossing-over can
occur during meiosis and the alleles are switched. Vestigial wings (VG) and Black body color (BL) are located
on chromosome 2.
mn bielasarner.com
7. Cross a female VG, BL fly with a wild-type male.
(ggbb x GGBB). What is the genotype and phenotype
of the offspring?
8. Choose a female from the offspring and mate it
with a male that has vestigial wings and a black body
(ggbb). Show a punnett square or a visual
representation of the alleles involved in this cross to
make a prediction about the offspring.
9. Complete the table (ignore sex).
Phenotype
Observed
Proportion
+ (wild-type)
Vestigial wings (B.gg)
Black body (bbG.)
VG, BL (ggbb)
10. How does crossing-over affect the observed
outcomes? Explain why the observed flies do not
match your prediction.
11. The percentage of crossing over events is used
to develop a map of chromosomes. View the
chromosome map on the last page. How far apart
are the alleles for black body and vestigial wings?
(Do the math!)
12. View the proportion of flies from your data that
indicate crossover occurred (VG and BL flies) and
multiple it by 100. Based on your data, how far apart
are these alleles?
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