HIV and other Viruses- Submit all sources!!!!!!!

VERY IMPORTANT: The last two projects I have submitted for help, the instructors did not include any of their sources. This is necessary for me to continue my research. So, PLEASE, submit sources and answer each question fully. 1. Most researchers agree that both HIV viruses were originally transmitted from primates to humans. What they disagree about is how and when the transfer took place. What primate species were the "original" hosts? 2. After extensive testing, researchers identified an African HIV-1-infected plasma sample originally collected in 1959. However, these researchers think that HIV-1 evolved much earlier. Why? 3. The The Man-Made Origin of AIDS summarizes va... click for more

Show all sources so I can research further

Bacteria never form any sort of grouping that resembles a multicelled organism with an internal division of labor among its cells. Think about the attributes of prokaryotic bacterial cells and the eukaryotic cells of which all multicellular organisms are comprised. Develop some hypotheses explaining why only eukaryotic cells have evolved into multicellular organisms. ***************************************** • Today, scientific advances are being made at an astounding rate, and nowhere is this more evident than in our understanding of the biology of heredity. Using DNA as a starting point, do you believe there are limits to the knowledge people should acquire? Defend your answer. • B... click for more

Developmental

First, define Meiosis. Then, define and discuss the "cost of meiosis" (Be sure to list at least 2 references in a References section. Second, speculate on why sexual reproduction has evolved.

Genetically, what is the sex (male or female) of people with the following sex chromosomes AND does the individual survive to be born?

Section 1. Genetically, what is the sex (male or female) of people with the following sex chromosomes AND does the individual survive to be born?: a. XXY b. XXXY c. XO d. XX e. OY Define the following terms: a. true hermaphrodite b. pseudohermaphrodite Section 2. As you should know from answering Section 1, phenotypic sex and genetic sex are not always the same. One fairly common condition is called testicular feminization. Part 1. First, define the condition known as testicular feminization, and describe the phenotype of individuals with this condition. Part 2. Then, describe the process of development in utero that leads to a normal human male. Part 3. Last, de... click for more

Problem Set

1 FSH stimulates the production of estrogen in this gland. 2 Functions in setting biological rhythms. 3 Produces and secretes testosterone. 4 Produces glucocorticoids. 5 Facilitates maternal behavior in mammals. 6 This hormone stimulates the release of two hypothalamic hormone. 7 A surge in this hormone triggers ovulation. 8 Necessary for "male" differentiation. 9 This temporary gland degenerates before each menstruation