Ans.
The process that involves exchange of genetic material between homologous chromosomes, is known as crossing over. It occurs during meiosis I (between prophase I and metaphase I).
Crossing over is responsible for the variation in organisms as it makes new genetic combinations in the offspring that are absent in either parents and thus, contribute to genetic diversity.
Thus, the correct answer is 'crossing over.'
Answer:
lower
Explanation:
<em>Enzymes are chemical substances or biological molecules that catalyze biological reactions by lowering the activation energy threshold required to start such reactions.</em>
The activation refers to the minimum energy that must be conquered by the reactants in a chemical reaction in order to cross over to the product's side.
Enzymes work by lowering this energy and hence, making the crossing over to the product's side faster than normal. They are not themselves used up in reactions and can always be recovered and reused.
<em>Correct answer</em>: lower
Answer:
ecosystem has seen a decrease in wetland areas and ... The graph below shows the size of a population of foxes over a period of years. ... B) greater reproductive success ... A) Both species evolved through the process of ecological succession.
Explanation:
The formula to calculate population density is C. # of organisms in a region divided by land area.
Or # of organisms ÷ Land Area
Hope this answers ur question & helps!
