You are a researcher who is interested in three genes in drosophila: The a gene, the b gene and the c gene. You think the genes may be linked, so you decide to do a cross using a true-breeding a+/b+/c+ fly and an a/b/c fly. The F1 generation is all a+/b+/c+. However, when the F1 generation is bred to a true-breeding a/b/c fly, it yields the following offspring phenotypes: 589 a+/b+/c+ ; 603 a/b/c ; 183 a+/b/c ; 176 a/b+/c+ ; 92 a/b+/c ; 95 a+/b/c+ ; 4 a+/b+/c ; 6 a/b/c+. Is this the expected ratio for unlinked genes (hint: the critical chi-squared value is 7.815)?

what are the genes and genetic controls governing the Entner Doudoroff pathway? Explain in great detail

Identify some possible effects of the following factors on microbial growth: pH, osmotic pressure, chemical requirements such as carbon, nitrogen, sulfur, phosphorus, oxygen

Hi

Could anyone please explain to me the principle behind the RNA isolation experiment.

Please answer flowing questions

1 which plants( Algae, Bryophyte, Monilophytes of Horsetails and ferns) are gametophyte dominant? explain

2 which plants(Algae, Bryophyte, Monilophytes of Horsetails and ferns) makes spores? explain

3 name the structure bryophytes use to anchor themselves to rocky substrates.

4 what are two similarities between mosses and ferns? explain

5 what are two differences between mosses and horsetails? explain

6. what is the earliest group of plants ( Algae, Bryophyte, Monilophytes of Horsetails and ferns) to evolve true vascular tissue, leave and roots? explain

Genes A, B, and C are linked on a chromosome and found in the order A-B-C. Genes A and B recombine with a frequency of 9%, and genes B and C recombine at a frequency of 22%. For the cross

a ⁺b ⁺c/abc⁺ × abc/abc,
predict the frequency of progeny. Assume interference is zero.

a)Predict the frequency of a⁺b⁺c progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300).

B) Predict the frequency of abc⁺progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Part C

Predict the frequency of a⁺bc⁺progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Part D

Predict the frequency of ab⁺c progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Part E

Predict the frequency of a⁺b⁺c⁺ progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Part F

Predict the frequency of abc progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Part G

Predict the frequency of a⁺bc progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

Predict the frequency of ab⁺c⁺progeny.Part H

Enter your answer to four decimal places (example 0.2356 or 0.2300)

1. You just has a bunch on twinkies for breakfast. Initially, you feel pretty good, but then feel low energy. After a few hours, you start to feel a little better. Describe what is happening to glucose regulation starting from just before before breakfast to a few hours after you eat. Be sure to mention what is happening in the pancreas, liver, muscle and adipose.  

2. After consuming a high salt diet, why to both ANF and AVP go up together?

Stephen Jay Gould and others have argued that the evolution of a self-conscious, intelligent species (i.e., humans) was historically contingent, or it would not have occurred had any of a great many historical events been different. The philosopher Daniel Dennett and others have disagreed, arguing that convergent evolution is so common that if humans had not evolved, some other lineage would probably have given rise to a species with similar mental abilities. Based on what you have learned concerning Evolutionary Theory, which of these ideas do you think are correct – and why? If Gould’s position is right, what philosophical implications does his reasoning suggest – and why?

Genes A, B, and C are linked on a chromosome and found in the order A-B-C. Genes A and B recombine with a frequency of 9%, and genes B and C recombine at a frequency of 26%. For the cross

a ⁺b ⁺c/abc⁺ × abc/abc,
predict the frequency of progeny. Assume interference is zero.

A) Predict the frequency of a⁺b⁺c progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300).

B) Predict the frequency of abc⁺ progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

C) Predict the frequency of a⁺ bc⁺ progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

D) Predict the frequency of ab⁺c progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

E) Predict the frequency of a⁺b⁺c⁺ progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

F) Predict the frequency of abc progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

G) Predict the frequency of a⁺bc progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

H) Predict the frequency of ab⁺c⁺ progeny.

Enter your answer to four decimal places (example 0.2356 or 0.2300)

1. Do a search online or look in your textbook for 1-2 antibiotics that affect Gram-positive bacteria and list them. On what part of the cell do the antibiotics usually work? List one or two antibiotics that affect Gram-negative bacteria? On what part of the cell do the antibiotics usually work? (Be sure to cite your sources in your answer.)

(textbook is openstax microbiology)

Outline the evidence supporting the proposition that chimpanzee have culture and present the arguments opposing this view too. Which view do you suspect is correct and why do you think this? How could this information color our thinking of early hominid evolution?

Genetics

What are some causes of cancer?

Cancer can arise spontaneously, but can also be induced as a result of environmental factors such as sun exposure and smoking. If you were in charge of allocating resources for cancer prevention, would you emphasize research on curing cancer, or education about cancer prevention? Explain your answer.

Although tobacco smoking is responsible for a large number of human cancers, not all smokers develop cancer. Why is this?

Pick a specific tumor suppressor gene or oncogene and explain how this gene can lead to or prevent cancer. Be sure to focus on the mechanism of how your chosen gene impacts the cell cycle. You can alternatively pick a virus that has been associated with cancer and explain how that virus impacts the cell cycle and ultimately leads to cancer.