Answer:
The answer is E.
Explanation:
In vivo or in vitro evolution (Directed Evolution) is a technique used by genetic scientists to push the change in nucleic acids or proteins in a specific direction to get the end results that they want.
And high-fidelity polymerase is used to get a replica of the target DNA that has less errors.
So the situation given in the question where researchers use a higher-fidelity DNA polymerase in vitro evolution, the mutation rate would most likely be lower because of the high-fidelity DNA polymerase.
I hope this answer helps.
(I don't know if this is right) Being lighter than air relates to density. There are also other noble gas elements with density lighter than air, such as helium. I would fill it with helium and regulate the amount due to the air pressure and altitude wanted/needed. This could be a good response for a middle school course, but if you need an extended response, then provide some scientific terms too.
Somatic cells contain two full sets of chromosomes ( making them diploid cells). Gametes are most often haploid cells, meaning they ONLY have one full set of chromosomes, so sense it has 20 and gametes cells only have one it has to be a somatic cell :)
Answer: Hip Bone
Explanation:
Hematopoiesis is a semi-solid tissue which is found in the cancellous or spongy portions of the bones.
In adult human, bone marrow is found in many bones of the body such as in the sternum, ribs and bones of pelvis. On an average the 4 % of the whole body mass is bone marrow.
In case of any blood forming tissue problem the tissue sample are usually extracted from the pelvic bone because this is one of the actively participating regions in the body of adult.
hence, the correct answer is hip bone.
The flower mechanism that would not help them preventing pollination by a specie such as a foreign plant would be that the flowers of different species are then the same color and would attract the same pollinators.Hope this would be of help.