The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
Answer:
B
Explanation:
In a command Economy, 1 is right. 3 and 4 are plain Rubbish.
Answer:
Mother: Rr Father: Rr
Explanation:
R r
R RR Rr
r Rr rr
This represents that both parents are carriers, but the dominant gene takes over. It is a 25% chance their offspring will receive the recessive gene of colorblindness, which is an example of Bob
A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels. ... Producers are the basic trophic level while top predators are the peak level.
