A phylogenetic tree is shown for the three domains of life (Eukarya, Archaea, and Bacteria). The tree branches in two directions from the first point, labeled Common ancestor of all life. One branch leads in the direction of Eukarya and Archaea, and the other branch leads to Bacteria. The branch leading to Eukarya and Archaea divide, one branch leading to each domain. The branch leading to Eukarya divides into four branches. One leads to Euglenozoans, and the other three lead to branching points. The first leads to Forams in one direction, and another branching point in the other that leads to Diatoms and Ciliates. The second branching point leads to Red algae in one direction, and a branching point that leads to green algae and land plants in the other direction. The third branching point leads to amoebas in one direction, and a branching point that leads to fungi and animals in the other direction. Land plants, Fungi and Animals are all highlighted.

Examine the figure. If you were a graduate student trying to develop a thesis project that would resolve polytomies, which of the following groups would you study?

#Question id: 2775

#Unit 2. Cellular Organization

To examine the folding and compaction of chromatin during mitosis, you will need to isolate and stain chromosomes at a particular stage using a special spreading preparation technique. For the best analysis, the chromosomes must be at which one of the following stages?

#Question id: 4549

#Unit 3. Fundamental Processes

Which of the following is the correct combination?                             

I) A- Holoenzyme, B- Core

II) A- Core, B- Holoenzyme

i. The six subunits constitute the RNA polymerase an enzyme

ii. Sigma stimulates tight binding between RNA polymerase and promote

iii. absence of sigma factor polymerase loosely bind with their promoter

Which of the following combination correct fit by follow the given graph;

#Question id: 3327

#Unit 11. Evolution and Behavior

Birds that are brood parasites lay eggs in the nests of other birds. This is a successful strategy for the parasite only if

#Question id: 5577

#Unit 5. Developmental Biology

Totipotency is a term used to describe a cell's ability to give rise to a complete new organism. In plants, this means that ________.

#Question id: 11613

#Unit 6. System Physiology – Plant

Gibberellin can induce auxin biosynthesis and that auxin can induce gibberellin biosynthesis. If the pea plants are decapitated, leading to  a cessation in stem elongation, which one of the following prediction about this experiment is correct?