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,...
Related questions
Question
How do you know which one number is for S/Tu or U/Tu I know both equals 36.6
Transcribed Image Text:The correct answer is:
What is the distance between S and Tu? → 20.9 cM,
What is the distance between S and U? → 36.6 cM,
What is the distance between U and Tu? → 15.6 cM,
Which gene is in the middle? - Tu
Transcribed Image Text:Fine spines (s), smooth fruit (tu), and uniform fruit color (u) are three recessive traits in cucumbers, the genes of which
are linked on the same chromosome.
A cucumber plant heterozygous for all three traits is used in a testcross, and the following progeny are produced
from this testcross:
U Tu 2
u Tu 70
u Tu 21
u tu 4
U tu
U tu
U Tu 13
S
82
21
u tu 17
Total
230
This one is a little tricky, so take a good look at the NCOS. Is the phenotype with all 3 recessive traits one of the
NCO's? Is the phenotype with all wild type or dominant alleles one of the NCO's? If not, what does this tell you?
A testcross is when you cross a heterozygote with an individual that is homozygous recessive for all traits being
studied.
SSS
ののの
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