Hello, and thanks for the question.
A population of Sri Lankan brown cockroaches lives on a forest floor. They suffer heavy predation from chameleons. Because their heads are small, the chameleons are unable to eat the very largest adult cockroaches, and instead prey upon small and medium sized adults. What type of selection does the chameleons impose on the roaches?
Hunting in the 1980s reduced the population of Northern elephant seals and their genetic variation. Their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000 but they have much less genetic variation than a population of southern elephant seals that was not so intensely hunted. This result in genetic changes of the population is called
Which of the following statements is NOT true?
Traits that are advantageous often do not persist in a population.
Humans have zero probability of becoming extinct because we are special.
Hope this helps!
The solution showed that all of your answer were not right. One of them was wrong, and that was the second one.
I remember you told me that You cannot use my username and passport for biowebsite. It is Ok. Now if i ask you 15-20 questions in 10/22/2011 (Saturday) at 1.00 pm, then can you give me the answers 45 minutes after? It should not be later than that. It is ok if you get one or two of them wrong. If you get 90% of them right, I will accept the answer. The questions are multiple choice. Can you do that? if yes, please tell me and also do not forget.
I know you do your best.The fact is that when I enter your answers, I will quickly understand if It is right or not. After I submit the choice, It shows me if I got it right or wrong. I can give you the username and passport for that website, then you can check which of your answers were wrong. I can do that, if you want. In this case, I will also tell you that where you can find the questions I asked you.
So if I submit 15 questions for you in staurday at 1.00 pm, can you give me the answers at 1.30 pm? I know I said i want them at 1.45, but now i changed my decision because of time of my assignment. Can you send the answers in 1.30 pm, if you get them in 1.0 pm? It should not not later than 1.30pm or 1.35 at ll. If you give it later than that time, it will not be useful for me any more. I want to be sure about that. Can you do that please? Thank you. I expect to get 80% of those 15 questions right which are 12 of them.
Multiple Choice questions:
1. If the earths climate changed into significantly warmer conditions than present, given that increase in body surface area increases heat dissipation, what kinds of humans would you expect in the deep future? Assume that all humans have to live in natural environmental conditions. i.e. not inside buildings.
Thinner and shorter build compared to present humans.
Same build as present humans.
Thinner and taller build compared to present humans.
Thicker and taller build than present humans.
Thicker and shorter build compared to present humans.
2. Which if the following statements about sickle-cell anemia is false?
Heterozygotes have a greater resistance to malaria.
Heterozygotes are carriers of the gene for sickle-cell anemia.
The sickle-cell disease will be immediately wiped out if a vaccine for malaria is found.
Homozygous recessives show an acute and sometimes fatal disease.
The distribution of the disease is closely aligned to where malaria is found.
3. Imagine that scientists removed 2 blastomere cells from a young 8-cell stage embryo in order to perform a genetic test. How would this impact the embryo's development?
The embryo will continue to develop, but will be 25% smaller in size when it is born.
There will not be a major impact on the embryo's development
The embryo will be born with rearranged body parts.
The embryo will be missing the organ system that usually derives from the two missing cells.
The embryo will die because 25% of the instructions for development are missing.
Which of the following describes the axial location of your heart?
anterior, dorsal, left
posterior, ventral, left
posterior, dorsal, left
anterior, ventral, left
Note: The fifteen questions in saturday are shorter and a lot easier than today's questions.
You're welcome. Speak to you soon!