Answer:
12
Explanation:
Suppose the four different strains are P, Q, R, S. Thus, the first infection can be from any of the four strains and it occurs in 4 ways.
Since an individual cannot be infected again with the strain from which he/she is been previously infected;
Then, at the second time;
The possible number of strain to be infected with = 4-1 = 3 ways
Thus; the number of possible different levels of severity can be viewed by forming two lettered word P, Q, R, and S without repetition which is:
= 4 × 3
= 12
Allele frequency of lillied in a given population so it should be A
He used Pea plants to help him find the laws of inheritance. He crossed homozygous (AA) tall plants with short (aa) plants and found that all of the off spring were tall, due to the fact that tall is dominant and short is recessive. He then conducted another experiment where all the offspring mated (all offspring were heterozygous (Aa)) And produced the F1 generation and 25 percent of the plants were short (use a punnet square to see why) and 75 percent were tall.
I hope this response helped :) If u have anymore q about mendelian genetics pls lmk !
Answer:
The brain gets better with practice, so routine actions like walking become second nature. That is why your first time on the monkey bars is harder than your 100th time.
So how does the brain judge distance? The key for animals — like monkeys and humans — is in our eyes.
Where these different views overlap is how the brain is able to calculate the difference in distance and to judge depth.
This happens because the closer an item is to you, the greater the relative difference between the eyes will be compared with the object. The farther away an item is, the smaller the relative distance between the eyes will be. Our brain is great at remembering patterns, and it remembers the differences that each eye is seeing and correlates it with a distance. It can also find the distance by calculating the “convergence,” or how crossed your eyes become while looking at something. The more crossed your eyes become when looking at an object, the closer the object.
