Answered: Strain A Strain B BB bb A a Virescent…

Name: In barley, a self-fertilizing species that can be cross-fertilized, tw
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Description: In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with virescent leaves occur. In strain A, the trait is caused by a cytoplasmic gene while in strain B it is by a recessive chromosomal gene. What phenotypes

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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In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with virescent leaves occur. In strain A, the trait is caused by a cytoplasmic gene while in strain B it is by a recessive chromosomal gene. What phenotypes would you expect among the progeny, and in what proportions in each of the following? Illustrate your crosses below, indicate and the female and male parent for each cross, and write the phenotype of all the parents and offspring(s).

a. reciprocal crosses between A and B

Use the following gene assignments:
Strain B (recessive chromosomal gene)
B- not virescent
Strain A (trait is in Cytoplasm)
A– virescent
a - not virescent
b - virescent
Example:
Strain A
Strain B
BB
bb
X
a
A
Virescent
Virescent
F1
A
Virescent
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