Using the gas pedal analogy, the proto-oncogene would be an accelerator since they promote cell division and
deregulate apoptosis, while tumor suppressor would
be the brakes since they constrain the progress of the cell
cycle and induce cell apoptosis. An
oncogene is, therefore, when the accelerator
is stuck in down position and the brakes are not working.
Answer:
The correct answer would be option D.
Explanation:
True breeding is a breeding procedure in which the parents would always produce their progeny with the same phenotype characters as the parents carry. This means for every trait these parents are homozygous so their offspring must show a similar phenotype.
In this case, all cattle are true-breeding which means they homozygous alleles show the progeny will also show similar traits which are short stature with brown hides and short horns.
Thus, the correct answer is option D.
Answer:
Chemicals that are secreted from antigen-presenting cells then activate helper T cells.
Explanation:
Answer:
All living objects are composed of cells, including you. Cells are the basic element of existence. Such cells are known as prokaryotes and eukaryotes. Procaryotes are cells not possessing a nucleus, or organelles comprising the genetic material of a cell, or other membrane-bound organelles.
Explanation: