Two genes of a flower, one controlling blue (B) versus white (b) petals and the other controlling round (R) versus oval (r) stamens, are linked and are 10 map units apart. You cross a homozygous blue-oval plant with a homozygous white-round plant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1,000 F2 progeny are obtained. How many plants of each of the four phenotypes do you expect?

#Question id: 5059

#Unit 5. Developmental Biology

The responding tissue has already been specified and needs only an environment that allows the expression of these traits, process called as

#Question id: 22967

#Unit 7. System Physiology – Animal

#Question id: 10535

#Unit 6. System Physiology – Plant

The insect ingests plant tissue containing the fatty acids, an enzyme in the gut conjugates the plant-derived fatty acid to an insect-derived amino acid to form an elicitor, When plants recognize elicitors from insect saliva induces some typical responses such as

a) Increasing Ca²⁺ levels in the cytosol and then activate an array of target proteins, such as calmodulin and other Ca²⁺-dependent protein kinases

b) In Arabidopsis, a calmodulin-binding transcriptional regulator called IQD1 was identified as an important mediator of defense responses against insect herbivory

c) overexpression of IQD1 in Arabidopsis activate the herbivore activity

d) IQD1 binds calmodulin, a major Ca2+-binding protein, in a Ca2+-dependent manner and subsequently inhibits the gene involved in glucosinolate biosynthesis

Which of the following combination from above statements is correct?

#Question id: 3521

#Unit 8. Inheritance Biology

Which of the following is incorrect about independent assortment?

#Question id: 4935

#Unit 11. Evolution and Behavior

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?