Genetics and Inheritance
A cross between two heterozygous sunflower plants showing incomplete dominance produces this phenotypic ratio.
What is 1:2:1?
Arabidopsis is widely used as a model plant because it possesses this general advantage.
What is that research findings can be extrapolated and it is easy to work with?
SHORTROOT positively regulates expression of this gene.
What is SCARECROW?
This hormone is primarily responsible for gravitropism.
What is auxin?
The two major transport pathways in plants are these.
What are the apoplastic and symplastic pathways?
A continuous range of phenotypes in an F₂ population despite Mendelian inheritance is best explained by this genetic model.
What is additive polygenic inheritance?
The first visible sign of seed germination is this event.
What is rupture of the testa?
Diffuse DR5::GFP expression in the spl mutant suggests SPL affects this process.
What is auxin transport/signaling?
Without gibberellic acid, DELLA proteins perform this molecular role.
What is repression of PIF gene expression?
Plasmodesmata originate during formation of this structure.
What is the phragmoplast?
In a pathway where the double mutant phenotype matches w2, this relationship exists between w2 and p1.
What is recessive epistasis?
New leaves and stems in Arabidopsis primarily originate from these structures.
What are apical meristems?
Expression of SPL in the suspensor causing embryo-like development demonstrates this principle.
What is sufficiency for embryo identity?
A nondegradable DELLA protein would produce this physiological response.
What is gibberellin insensitivity?
The most direct experiment to determine whether the quiescent center organizes root growth is to do this.
What is ablate the QC?
Plants with genotype AABBCCDD would be expected to display this phenotype in an additive height model.
What are the tallest plants?
The above-ground shoot system is derived from this embryonic region.
What is the shoot apical meristem between the cotyledons?
A SPL promoter fused to GFP is an example of this experimental approach.
What is a reporter construct/reporter line?
Vivipary in the SnRK2 triple mutant occurs because the plant cannot properly transduce this hormone signal.
What is ABA signaling?
Sussex’s ectopic auxin experiments demonstrated that auxin can direct this developmental process.
What is vascular tissue formation?
In the hyper-sentient corn experiment, the proportion of F₂ plants capable of walking, unionizing, and shouting insults is this fraction.
What is 27/64?
During double fertilization, one sperm fertilizes the egg while the second fertilizes this structure.
What is the central cell?
When laser ablation of the apical cell induces SPL expression in the basal cell, this type of regulation is suggested.
What are positional cues?
The reason only the SnRK2 triple mutant shows a severe phenotype is because of this genetic phenomenon.
What is genetic redundancy?
A change in phenotype caused by environmental conditions is known as this.
What is phenotypic plasticity?