YODA, the protein involved in the very first division in the zygote of Arabidopsis and in establishment of initial polarity, is activated by the product of another gene, called SHORT SUSPENSOR (SSP). Loss-of-function mutations in SSP lead to the same phenotypes as loss-of-function mutations in YODA. To place these genes in the genetic pathway, people tried to establish epistatic relationships between SSP and YODA. Based on the information about YODA and SSP from the lecture, predict what phenotype will be observed in the embryos that are double-mutant for a loss-of-function mutation in SSP and a gain-of- function mutation in YODA.
YODA, the protein involved in the very first division in the zygote of Arabidopsis and in establishment of initial polarity, is activated by the product of another gene, called SHORT SUSPENSOR (SSP). Loss-of-function mutations in SSP lead to the same phenotypes as loss-of-function mutations in YODA. To place these genes in the genetic pathway, people tried to establish epistatic relationships between SSP and YODA. Based on the information about YODA and SSP from the lecture, predict what phenotype will be observed in the embryos that are double-mutant for a loss-of-function mutation in SSP and a gain-of- function mutation in YODA.
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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please explain if it would be elongated or shortened expression! I know double mutant epistasis is always downstream> upstream but if upstream gene controls downstream, what happens?
Transcribed Image Text:YODA, the protein involved in the very first division in the zygote of Arabidopsis and in establishment of
initial polarity, is activated by the product of another gene, called SHORT SUSPENSOR (SSP).
Loss-of-function mutations in SSP lead to the same phenotypes as loss-of-function mutations in YODA. To
place these genes in the genetic pathway, people tried to establish epistatic relationships between SSP
and YODA. Based on the information about YODA and SSP from the lecture, predict what phenotype will
be observed in the embryos that are double-mutant for a loss-of-function mutation in SSP and a gain-of-
function mutation in YODA.
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