Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?

#Question id: 1420

#Unit 4. Cell Communication and Cell Signaling

Examination of a cell’s structure reveals condensed chromatin, a shrunken cytoplasm, but unfragmented DNA and a lack of blebbing. If this cell has been triggered to undergo apoptosis by an extrinsic factor, which of the following events has NOT likely happened yet?

#Question id: 29017

#Unit 11. Evolution and Behavior

In a random population has an Aa heterozygous genotype with a frequency of 1/2 undergo inbreeding with repeated self-fertilization, find out the frequency of AA, Aa and aa after 4th generation;

#Question id: 4508

#Unit 3. Fundamental Processes

Statement: In the case of group II introns, the chemistry of splicing and the RNA intermediates produced are the same as those for nuclear pre-mRNA.

 Explanations: I. The intron uses an A residue within the branch site to attack the phosphodiester bond at the boundary between its 5’ end and the end of the 5’ exon-that is, at the 5’ splice site. This reaction produces the branched lariat.

II. A second reaction in which the newly freed 3’ -OH of the exon attacks the 3’splice site, releasing the intron as a lariat and fusing the 3’ and 5’ exons.

#Question id: 28270

#Unit 5. Developmental Biology

#Question id: 11254

#Unit 10. Ecological Principles

Character displacement: