List the possible levels of gene expression control in the typical embryo, i.e., from the DNA itself to the final functional protein product. Explain, briefly, how each step could be a control point for gene expression

The decline in sheep and lamb numbers in the U.S. can be attributed to multiple reasons and causes. Did you find any of these reasons or causes surprising? Why or why not? Conversely, goat numbers in the U.S. are increasing. Do some research and discuss why goats are gaining popularity.

Assume that you are employed as a developmental biologist at NASA and the first returning mars explorer was found to have a small organism from mars onboard. The organism had the usual head-tail axis as well as dorsal-ventral polarity and what appeared to have right-left asymmetry. However upon analysis it was found to be composed of silicon based compounds and had no DNA, RNA or proteins at all. Discuss reasons why this organism would have similar developmental controls to those of earth’s carbon-based life and also discuss the opposing view as to why it would not.

For natural selection to happen, there must be variation present in a population. This is true because in a population without variation

Select one:

a. Change between generations can't happen

b. If there is only one trait, it must be advantageous, and thus change is not necessary.

c. There is no inter-individual competition.

d. Offspring never inherit mutations.

The human gene Trl is maternally imprinted. Hannah has a heterozygous genotype include one wildtype allele and one copy of the mutant “1” allele, Trl⁺Trl¹. Hannah expresses the mutant allele. Describe the methylation pattern of Trl alleles in Hannah’s somatic cells and in her gametes.

Research and write about a USAGE for wearable and Implantable for Heart and Parkinson's Disease. Provide as many details as possible. Cite sources. Answer can also include how it impact business, consumer or personal life.

BLAST results will indicate the percentage of genome comparison among known sequences as well as predicted sequences. A predicted sequence can best be characterized as a(n)

All cancers arise as a result of changes in the DNA sequence of the genomes of cancer cells. Gene expression assays may be helpful in showing the progression of the cancer phenotype by identifying the driver mutations which are:

Please explain briefly about how the protein folding is wrong for the Parkinson's disease and give a potential approach to treat it.

Thanks

Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFBeta? a) Dominant negative SMAD4 b) Loss of TGF Beta receptor II c) Overexpression of Smad2

Explain why it is correct and why the other options are wrong.

1.What does Streptococci look like under the microscope?

a.strings of rods

b.strings/chains of spheres

c.clusters of rods

d.grape-like clusters of spheres

2.What is the total magnification when you used he 40X objective?

a.400X

b.40X

c.4X

d.4000X

QUESTION 3

1. What was the purpose of the streak plate method?

QUESTION 4

1. The dye that gives Gram+ bacteria their color is

1. The dye that is retained by Gram- bacteria is

QUESTION 6

1. The counterstain used for the acid fast staining procedure is

QUESTION 7

1. Which of the following is NOT a selective medium?

QUESTION 8

1. Alpha hemolysis is

QUESTION 9

1. Amylase is an enzyme which breaks down

QUESTION 10

1. A medium that supports the growth of a wide variety of bacteria

Why is it important that there is a “satisfactory linear portion” in the enzyme assay?

List and describe synapomorphies for Arthropods. Contrast the subclades: Chelicerata, Crustacea, Myriapods, and the Hexapoda(insects).

If fine glass needles are used to manipulate a chromosome inside a living cell during early M phase, it is possible to trick the kinetochores on the two sister chromatids into attaching to the same spindle pole. This arrangement is normally unstable, but the attachments can be stabilized if the needle is used to gently pull the chromosomes so that the mictotubules attached to both kinetochores (via the same spindle pole) are under tension. What does this suggest to you about the mechanism by which kinetochores normally become attached and stay atached to microtubules from opposite spindle poles? Is this finding consistent with the possibility that a kentochore is programmed to attach to mictotubules from a particular spindle pole? Explain your answer.

Question 2 (5 pts). In roses, two gene loci on an autosomal chromosome are 30cM from each other. At locus 1, the E allele for red flower color is completely dominant to the e allele for pink flower color. At locus 2, the G allele for thorns is completely dominant to allele g for thornless. A particular rose cultivar, true-breeding for red flower and thorns, is crossed to cultivar 2, true-breeding for pink flowers and thornless. The F1 generation is testcrossed with cultivar 2 and 300 testcross progeny are produced.

What is the expected frequency of gametes of genotype EG produced by the F1-generations plants?

When the F1-generation plants produce gametes, what is the expected frequency of recombinant gametes?

In the testcross progeny, how many plants are expected to have pink flowers and be thornless?

In the testcross progeny, how many plants are expected to have pink flowers and thorns?

e. If the two loci were not linked, and segregated independently from each other, how

many plants would be expected to have pink flowers and thorns in the testcross progeny?