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1. What is pyrabactin and how did it help researchers discoverone of the ABA receptors?

2. What are the roles of maternally-derived and embryo-derivedABA in seed development?

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Elin Hessel
Elin HesselLv2
28 Sep 2019

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Related questions

True or False: Establishment of the apical and basal poles (root-shoot axis) of an embryo are complete by the time seed development is complete.

1• T/F: many (species) embryos show anatomical asymmetry immediately at fertilization •

T/F: many (species) embryos show genetic or sub-cellular asymmetry immediately at fertilization •

T/F: In some instances, mRNAs and proteins already have polarized distributions before fertilization occurred, meaning some aspects of embryonic polarity is maternally determined

2. The mid-blastula transition describes the point of development where: (could be multiple correct responses) a. Zygotic gene transcription initiates b. Zygotic gene transcription terminates c. Maternal gene transcription initiates d. Maternal gene transcription terminates •

Which axis is specified by fertilization and cortical rotation in the frog embryo? a. A-P b. D-V •

In Xenopus development the mesoderm derives from the: a. Vegetal pole cells b. Marginal zone cells c. Animal cap cells •

Liver, lungs, and pancreas are derived from a. endoderm b. ectoderm c. mesoderm

2-4 Explain the earliest mechanisms specifying each germ layer • XNR/Nodals are _____________ factors acting as morphogens to specify mesoderm. a. Secreted b. Intracellular

What is the benefit of a seed storing nutrients for the plant embryo, if the plant is already acquiring its food through photosynthesis?

Based on your knowledge of auxin production and how gravity and light affect plants, what would likely occur if a seed is planted upside down with a light source below the plant?

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