What is meant by the term "cotranslational disassembly". To what sorts of viruses does it apply? How does it help to explain the "life-cycle" of these viruses?

1) Use examples from ssRNA viruses to show how some viruses' genome organization and replication strategy conform to the principle of genetic economy and explain why your chosen examples are appropriate..

1. A petri dish is inoculated with a single bacterium and the intrinsic rate of increase for the species is 0.5.

a. What will the size of the population be after 10 generations?

b. How often will the population double, if the rate of increase remains constant?

c. If the petri dish can hold one million bacteria, what will the rate of increase be after 25 generations?

d. The rate of resource use by the first species is 2 units/individual. A second species is added to the petri dish that uses resources at a rate of 3 units/individual and has a carrying capacity of 750,000. What will be the end result of adding in the second species of bacteria (i.e., will one species out-compete the other or will they co-exist)?

How do picornaviruses achieve cell entry and how does this process differ from that used by enveloped viruses? What checkpoints are involved in the process? What are the roles of the “canyon” and the pocket factor?

C3 deficiencies are typically lethal but C8 deficiencies are survivable. How are individuals with a C8 deficiency able to fight many types of infection?

Explain the evolution and the diversification of the early amniotes into contemporary reptiles. Use a phylogenetic tree to illustrate your answer.

How did black children experience enslavement? How were their lives and work different on a small plantation versus a large one?

P.S This is History subject

After watching "A world without microbes: An Apocalyptic Thought Experiment" video

1) What is the fundamental impact of microbes on this planet

2) Which two items discussed in the video impressed the most

• A picture of the crystal structure of Human P-type ATpase protein and a description of its 2°, 3° and 4° structure

What is the importance of the cell membrane in maintaining homeostasis ?

Can someone please, explain the different types of harsh habitat and the effect on this on our ecosystem.

Selection has favored large body size in male kangaroos because larger male kangaroos are better able to access females than smaller males. What type of selection is this?

Group of answer choices

Intrasexual

Both C & D

Stabilizing

Natural

Intersexual

In addition to C. elegans and Drosophila, Zebrafish are also another model organism - and have a spine. We're interested in two phenotypes, a curved spine and a gene that causes skin tumors to form on the fish's skin. We'd like to know if we could use the curved spine as an indicator if a fish may develop tumors (if the genes are linked). We'll assume that each of these traits is controlled by a single gene where:

a curved spine is the result of a dominant allele S (and a normal spine is the result of recessive alleles s),
and tumor growth is the result of a recessive allele t (and no tumor growths are a dominant T allele).

A testcross is performed with a fish that is heterozygous for both genes and the resulting progeny are given below.

TtSs x ttss

curved spine & tumors 18
curved spine & no tumors 23
normal spine & tumors 26
normal spine & no tumors 15

1. Assume for a moment that these genes are linked. If so, what allele combinations are parental in the TtSs genotype listed in the cross?

Are these two genes following Mendelian inheritance patterns? Use Chi-Squared analysis to test them. (X² = the sum of (o-e)²/e)

The Class Amphibia is divided in three living orders: Anura, Urodela and Gymnophiona. Provide a detailed account of 1) the typical life- cycle of an amphibian and 2) some specific patterns distinct to each order. You should make reference to reproduction, development and behaviour to structure your answer.