<u>Answer:</u>
<em>C. many more generations can be studied using short-lived organisms</em>
<u>Explanation:</u>
<em>Fruit flies are organisms with a shorter lifespan.</em> Their average lifecycle takes about a week to develop from lava to an adult. This <em>characteristic of fruit flies are reason they are used for the genetic investigation. </em>
The <em>genetic characteristics of the organism</em> can be studied over a short time. The accuracy of the study can be increased as there will be more <em>data and statistics related to same experiment. </em>
<em>Long term effect as well as short term effect can be studied easily. </em>
Answer:
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".
Explanation:
Answer:
HeLa cells contain rare traits that make them invaluable to scientific research. Research into the Lacks family may provide insight into this mutation and cell proliferation.
Explanation:
HeLa cells have a controversial origin, rooted in ethical breaches. They were derived from a non-consenting, female African-American donor patient, Henrietta Lacks who was terminally ill with a form of cervical cancer. These particular cells have a remarkably short period of proliferation, due to their active telomerase.
During cell division, these telomoerases were found to make repeat copies of the cell's telomere, and the cells can divide an unlimited number of times in lab cell cultures- a very rare occurrence. They were later commercialized- HeLa cells are durable, robust and commonly used in cancer cell research.
Answer;
They have little claws at the end of their feet/legs
Explanation;
-Grasshoppers are long, slender, winged insects with powerful hind legs and strong mandibles, or mouth parts, adapted for chewing.
-They have a front pair of rigid wings and a hind pair of larger, membranous wings, often brightly colored.
-The ends of legs modified for holding on to plants in grasshoppers, by having little claws at the end of the legs.
-The third pair of legs they are bigger, more muscular with spring like tendon to help in jumping.
Proteins, among the most complex of all organic compounds, are composed ofamino acids<span> (see Figure 2-4), which contain </span>carbon<span>, hydrogen, </span>oxygen, andnitrogen<span> atoms. Certain </span>amino acids<span> also have </span>sulfur atoms<span>, </span>phosphorus<span>, or other trace elements such as iron or copper.</span>
