Egg cell in the embryo sac

#Question id: 10238

#Unit 10. Ecological Principles

The diagram below shows the frequency distribution of two closely related bird species based on their resource use in sympatric. Which one of the following phenomena most appropriately explains the change in frequency distributions of species 1 and 2 in the figure given above?

#Question id: 2466

#Unit 2. Cellular Organization

Multinucleated cells may result from a defect in:

#Question id: 28473

#Unit 5. Developmental Biology

which transcriptional factor is involved to maintained the pluripotency of ICM ?

#Question id: 14476

#Unit 13. Methods in Biology

#Question id: 2890

#Unit 2. Cellular Organization

Match individual variant histones i) to iv) to one or more of the possible functions listed in a) to g).

Variant histones              Functions 

i) CENP-A                         a) DNA replication

ii) H2A.X                           b) As a barrier to stop heterochromatin spreading

iii) H2A.Z                          c) DNA repair

iv) H3.3                             d) Transcriptional activation

                                          e) Kinetochore assembly 

                                           f) Recombination

                                          g) Genome maintenance