Biology, 22.04.2020 02:58 tursunovarukhshona

The volume and mass of the brain has increased about threefold from early human ancestors such as Australopithecus afarensis, to modern humans, Homo sapiens. There have been several speciation events along the human lineage between these two endpoints. The model of punctuated equilibrium would be applicable to this trait if:

Answers: 3

Show answers

Another question on Biology

Biology, 22.06.2019 02:50

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Answers: 1

Answer

Biology, 22.06.2019 06:20

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

Answers: 2

Answer

Biology, 22.06.2019 07:30

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

Answers: 1

Answer

Biology, 22.06.2019 09:00

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

Answers: 2

Answer

You know the right answer?

The volume and mass of the brain has increased about threefold from early human ancestors such as Au...

Questions