Answer:
b. skin from mouse 2
Explanation:
According to this question, a mice skin transplant is being conducted. Four mice labelled Mouse 1, Mouse 2, Mouse 3 and Mouse 4 are used for this experiment. A small patch of skin from mouse 2 (the donor) was transplanted onto mouse 1 (the recipient), however, it was eventually rejected by the recipient (mouse 1).
This transplant rejection is due to the fact that the recipient's immune system identifies the tansplanted skin as foreign, hence, begins to attack it, leading to the skin's necrosis or death. Based on this, the same transplant rejection will occur if skin patches from mouse 3 and 4 are used.
However, the immune system of mouse 1, which is the recipient, will identify skin patches from MOUSE 2 as less foreign than any other skin from other mice. This is because skin from that mouse has been used before, hence, the recipient's immune recognizes it when a follow-up transplant is conducted. This makes a follow-up transplant from MOUSE 2 be the least likely to be rejected.
Answer:fungi
Explanation:fungi are heterotrophic plants. They are organisms that lack chlorophyll,true roots,stems and leaves .as a result they cannot produce their own food .they depend on dead and decaying matter for their source of energy, thus they are saprophytes.Fungi may be Unicellular or multicellular. They consist of harlike filaments of hyphae which fuses together and forms a mass of mycellium. Common example of fungi we see around us are mushrooms. Fungi feed by secreting digestive enzymes into their substrate and they absorb the nutrients that are broken down by the enzymes. Fungi are important because they help to rid the environment of dead matter by decomposing them. Matured fungi reproduce asexually by the means of spores
Genetics was the key information that was not known during Darwin’s time.
A phylogenetic tree<span> or evolutionary </span>tree<span> is a branching diagram or "</span>tree<span>" showing the inferred evolutionary relationships among various biological species or other entities—their </span>phylogeny<span>—based upon similarities and differences in their physical or genetic characteristics.</span>
Answer:
As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.
