For natural selection to occur, several premises must be satisfied. Firstly, there must be variation in a population. If all individuals are the same, there is no variation on which selection can occur. Secondly, these traits must be heritable, meaning they are passed from parent to offspring. Natural selection cannot operate on traits that have no genetic basis. There must also be differential reproduction, which means that some individuals must reproduce more than others. When all of these factors occur, natural selection results in evolution as advantageous traits propagate throughout the population.
Natural selection is quite variable, as changes in the environment impact what traits are advantageous in a particular time and place. A good of example of this comes from Galapagos finches. These birds have varying beak sizes. Wide beaks are best for eating hard seeds, while long narrow beaks are more adept at exploiting the fleshy fruit from trees. Typically narrow beaks are more prevalent, but during drought conditions when trees cannot produce fruit, seeds become a more abundant food item. This results in those finches with wide beaks having more food available and reproducing more than those with narrow beaks. When droughts persist over many years, wide beaks replace narrow beaks as the most common, but this trend reverses when droughts end and fruits once again become available.
Hello,
Here is your answer:
Thew proper answer to this question is option B "false". That's because a negative tropism is when its moving away.
Your answer is B.
If you need anymore help feels feel to ask me!
Hope this helps!
Answer:
Flavin adenine dinucleotide
High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain. Glycolysis is the first of the three steps used to breakdown glucose to produce ATP. Glucose, a 6 carbon sugar, is split into two 3 carbon sugars.
Formula: C27H33P2N9O15
Explanation:
The answer is Science. Science is one of the most respected scholary journals where scientists can publish their work after they have written up a manuscript. However, publishing in Science is not easy. Once the authors of a certain proposed paper write it and send it to the editors, the paper itself undergoes a process called double blind peer-review, where their paper is being fact-checked and otherwise scrutinized by multiple researchers of their field in order to maintain a very high quality level of the papers that are being published in Science.
Answer:
D
Explanation:
Because when Charles Darwin first wint he found that most had short fat beaks and other had long pointy beaks.
