Feedback mechanisms suppress signaling by the PKA pathway:

1. Intrinsic GTPase activity of Gαs

2. PDE acts to hydrolyze cAMP to 5′-AMP

3. By BARK

TLS Online TPP Program

#Id: 2113

#Unit 8. Inheritance Biology

Haploinsufficiency- One copy of the gene is missing, a mutant phenotype is produced.

TLS Online TPP Program

#Id: 10187

#Unit 6. System Physiology – Plant

Induce cell division in callus cells in the presence of an auxin

Promote bud or root formation from callus cultures when in the appropriate molar ratios to auxin

Delay senescence of leaves

Promote expansion of dicot cotyledons

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#Id: 525

#Unit 2. Cellular Organization

The second parity rule applies more closely to introns than to exons.

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#Id: 5080

#Unit 6. System Physiology – Plant

The nuclear genes that encode messages for chloroplast proteins:  the small subunit of ribulose-1,6-bisphosphate carboxylase/oxygenase (rubisco) and the major light-harvesting chlorophyll a/b–binding proteins associated with the light-harvesting complex of photosystem II (LHCII-b proteins).

TLS Online TPP Program

#Id: 1056

#Unit 5. Developmental Biology

Limb field represents a “harmonious equipotent system” wherein a cell can be instructed to form any part of the limb.