Answer:
Since the gene mutates at a rate of 0.76 base pairs every 17.1 million years, to find out the time it would take for 1 base pair to mutate can be calculated by dividing 17.1 million years by 0.76
17,100,000 ÷ 0.76 = 22.5 million years
The following equation can be used to describe this:
μ = [(r2/N2) − (r1/N1)] × ln (N2/N1) = (f1 − f2) × ln (N2/N1)
r1 = the observed number of mutants at time point 1
r2 = the observed number of mutants at the next time point
N1 and N2 are the numbers of cells at time points 1 and 2
Hope that answers the question, have a great day!
Working in a lab means working under controlled environment. If in the generation 1 and generation 3, the number of bird’s increases or decreases in number, the possible conditions for this would
- The amount of food increased or decreased
- If a flock’s beak type made it easier to pick up the available food, the flock grows and vice versa
Justification: if the beak type for generation 1 makes the food intake easier, it will grow which ultimately decreases the food for the generation 3 which has un-supportive beak type.
Option - food is the correct answer.
Food vessels such as fu, gui, and dui were popular in Zhou times. These disappeared during the Han dynasty, during which the ding, zhong, hu, and fang were the main vessel types used. In Western and Eastern Han, the ding was one of the most common bronze-derived shapes in pottery.
Answer:
c. red, green and blue.
Explanation:
The three main colors, also known as the primary colors are Red, Green and Blue. The trichromatic theory believes that the human eye and receive light of three different wavelengths (which are red, green and blue) and is able to combine these three different wavelengths in order to see the entire visible spectrum that make up millions of different colors. As can be visualized by the attached picture below.
Answer: The field is experiencing <em><u>Secondary succession.</u></em>
Explanation:
Ecological communities change slowly over time. While <em>primary succession</em> is initiated by pioneer species in areas that haven't previously been colonized; secondary succession always follows other communities. <em>Secondary succession</em> follows major disruptions in communities like fires, storms, flooding and even human disturbance.
The field becoming overgrown is typical of secondary succession. After years of disuse, the field is being occupied by species more <em>capable</em> of thriving in changed conditions. The community may be on its way to becoming a stable climax community if no further disruptions occur.
