Biology and Genetics

You encounter an organism that is endothermic and lives in the tropical rainfore

You encounter an organism that is endothermic and lives in the tropical rainforest. What would you predict about this organism? Assume comparisons are with organisms of a similar …

You establish a nature reserve in your backyard and introduce in it 50 salamande

You establish a nature reserve in your backyard and introduce in it 50 salamanders. After 10 months, you find 61 salamanders in the reserve. How long will it take for initial popu…

You examine a bacterial gene that produces a small peptide. The DNA sequence is

You examine a bacterial gene that produces a small peptide. The DNA sequence is predicted to produce the mRNA sequence indicated below (Questions 13-15). 5?-UCUUAGGAGGUAUCUCCAUGUC…

You examine a population of snapdragons in which flower color is controlled by s

You examine a population of snapdragons in which flower color is controlled by single gene with two alleles (R/r) that demonstrate incomplete dominance. You count 120 plant with w…

You examine body weight in a laboratory population of mice. You find that indivi

You examine body weight in a laboratory population of mice. You find that individuals fall into five discrete weight classes with mean weights of 15grams, 20gr, 30 gr, and 35gr. T…

You examine four populations each with allele frequencies of p=q=0.50. You mate

You examine four populations each with allele frequencies of p=q=0.50. You mate these 4 populations randomly for 100 generations. The only variable you motify is the size of each …

You examine the buffering capacity of three unknown solutions by conducting an e

You examine the buffering capacity of three unknown solutions by conducting an experiment where you slowly add 0.01M HCl to each solution until the solution is neutralized. Phenol…

You examine the buffering capacity of three unknown solutions by conducting an e

You examine the buffering capacity of three unknown solutions by conducting an experiment where you slowly add 0.01M HCl to each solution until the solution is neutralized. Phenol…

You expose growing cells to 3H-thymidine (a radioactive nucleoside) just as they

You expose growing cells to 3H-thymidine (a radioactive nucleoside) just as they enter S-phase, then wash the labeled base off the cells and let them go through a second S-phase b…

You exposed wild-type yeast to increasing doses of UV radiation. If you were to

You exposed wild-type yeast to increasing doses of UV radiation. If you were to measure mutation rate in cells UV radiation, what would you expect the results to be? As dosage inc…

You extracted RNA from a spider leg and you quantified your RNA extraction. You

You extracted RNA from a spider leg and you quantified your RNA extraction. You got the values of: 32.5 ng/ul 1.9 = 260/280 ratio 0.2 = 260/230 ratio Is this a “good” extraction? …

You facility recently had a privacy violation. Terry, a former employee, was ter

You facility recently had a privacy violation. Terry, a former employee, was terminated 6 weeks ago. Apparently, Terry had a grudge against the hospital, so he went into the radio…

You fill a coffee cup (250 mL volume) with seawater and hypothetically dye all t

You fill a coffee cup (250 mL volume) with seawater and hypothetically dye all the water molecules in the cup pink, then pour the cup back into the ocean and it mixes homogenously…

You find a litter of stray cats in an abandoned car. The mother cat is tortoise

You find a litter of stray cats in an abandoned car. The mother cat is tortoise shell fur (a mixture of black and tiger stripe) and she has seven kittens. Three females and four m…

You find a litter of stray cats in an abandoned car. The mother cat is tortoise

You find a litter of stray cats in an abandoned car. The mother cat is tortoise shell fur (a mixture of black and tiger stripe) and she has seven kittens. Three females and four m…

You find a mutant single-celled amoeba that does not move in response to additio

You find a mutant single-celled amoeba that does not move in response to addition of a food source. With further experiments, you figure out that there is a defect in one of the m…

You find a new gene involved in metabolizing plastics. You decide to search for

You find a new gene involved in metabolizing plastics. You decide to search for other potential plastic metabolizing bacteria by using primers that amplify that sequence. When you…

You find a single-celled eukaryotic organism that has plasmids, a nucleus, 80S r

You find a single-celled eukaryotic organism that has plasmids, a nucleus, 80S ribosomes, and ester-linked unbranched lipids. In what way would this be an unusual eukaryote? Selec…

You find a transcription activator called Msn2 in yeast. You do a deletion analy

You find a transcription activator called Msn2 in yeast. You do a deletion analysis to dissect out the function of each part of the protein. When you delete the N-terminus you get…

You find a transcription activator called Msn2 in yeast. You do a deletion analy

You find a transcription activator called Msn2 in yeast. You do a deletion analysis to dissect out the function of each part of the protein. When you delete the N-terminus you get…

You find in Marshak a new type of animal that looks different. You catch two of

You find in Marshak a new type of animal that looks different. You catch two of these animals to start a colony. You now find other ones covered with dimples running around Marsha…

You find that there are several organisms that live exclusively in this field. Y

You find that there are several organisms that live exclusively in this field. You need to calculate growth efficiency (EG) for these two organisms. The first is the field cricket…

You find that there are several organisms that live exclusively in this field. Y

You find that there are several organisms that live exclusively in this field. You need to calculate growth efficiency (EG) for these two organisms. The first is the field cricket…

You find the following data regarding the number of people affected by CF 30 yea

You find the following data regarding the number of people affected by CF 30 years ago, and today, from genetic tests of US hospital patients. In both years, the sample size was o…

You find the following report about blackouts. “The acceleration that causes bla

You find the following report about blackouts. “The acceleration that causes blackouts in fighter pilots is called the maximum g- force. Fighter pilots experience this force when …

You find two mutations that cause blue wings (b blue is recessive to b+ normal)

You find two mutations that cause blue wings (b blue is recessive to b+ normal) and spiny bristles (W wiry is dominant to W+ normal). They are linked to this chromosome (pictured)…

You find yourself sitting in at a table in the “Ol‘ Living Scientist Cafe” and y

You find yourself sitting in at a table in the “Ol‘ Living Scientist Cafe” and you overhear comments from conversations going on at nearby tables. Based on your molecular biology …

You find yourself up late studying for a micro exam. Looking for company you go

You find yourself up late studying for a micro exam. Looking for company you go to a local eatery and enjoy some dip and chips. Your friends don't finish all the dip, so you bring…

You found a gene that is predicted to encode a 30kDa--Protein J. After generatin

You found a gene that is predicted to encode a 30kDa--Protein J. After generating a highly specific antibody, you perform a western blotting analysis on Protein J. You found a sin…

You further investigate the regulatory proteins that bind to Regions 1, 2 and 3

You further investigate the regulatory proteins that bind to Regions 1, 2 and 3 using gel shift assays. A gel shift assay uses labeled DNA as a target for regulatory protein bindi…

You gather kinetic data for an enzyme in the presence and absence of a new drug

You gather kinetic data for an enzyme in the presence and absence of a new drug candidate. How does this drug affect the enzyme activity? A) It acts as a transition state analog. …

You generated a plant that is heterozygous for three quantitative trait loci (QT

You generated a plant that is heterozygous for three quantitative trait loci (QTL). In the heterozygous state, each locus has one allele that contributes one dose of trait (pigmen…

You generated liposomes with phospholipid and cholesterol from a solution contai

You generated liposomes with phospholipid and cholesterol from a solution containing NaCl, glucose, and phenylalanine.You precipitated the liposomes and transferred them into a so…

You generated liposomes with phospholipid and cholesterol from a solution contai

You generated liposomes with phospholipid and cholesterol from a solution containing NaCl, glucose, and Phenylalanine. You precipitated the liposomes and transferred them into a s…

You get a job in a new lab with an old centrifuge and your boss asks you to spin

You get a job in a new lab with an old centrifuge and your boss asks you to spin tissue culture cells at 1,000xg for 5 minutes. You look at the centrifuge and the control is marke…

You give human volunteers doses of a fungus that will cause a rash on the skin (

You give human volunteers doses of a fungus that will cause a rash on the skin (undergrads will do anything for a few bucks). Here's the dosage of cells and how many people develo…

You go for a long run on a warm day and when you return, your face is red and fl

You go for a long run on a warm day and when you return, your face is red and flushed. This is due to vasoconstriction of the capillaries in your face vasodilitation of the capill…

You go online to see if these mutations are known, and you find that a drosophil

You go online to see if these mutations are known, and you find that a drosophila lab at Purdue University has published that they have isolated flies with similar phenotypes. The…

You got information from the admitting office that Mr John 45 years old client w

You got information from the admitting office that Mr John 45 years old client with complaints of fever and headache wants to get admitted to your unit for observation and treatme…

You got information from the admitting office that Mr John 45 years old client w

You got information from the admitting office that Mr John 45 years old client with complaints of fever and headache wants to get admitted to your unit for observation and treatme…

You graduated from Penn State ten years ago and now two of your closest friends

You graduated from Penn State ten years ago and now two of your closest friends are getting married. They want to have four children, with two of them being boys and two of them b…

You graduated from Penn State ten years ago and now two of your closest friends

You graduated from Penn State ten years ago and now two of your closest friends are getting married. They want to have four children, with two of them being boys and two of them b…

You grow a generalized transducing phage on E. coli with the phenotype bio+ his

You grow a generalized transducing phage on E. coli with the phenotype bio+ his - trp+ and mix it with a recipient that is bio- his + trp-. You obtain the data below: (attached) W…

You grow a million cells, half of which are liver cells and half of which are va

You grow a million cells, half of which are liver cells and half of which are vascular cells, on the surface of a Petri dish at 37°C. Initially, the liver and vascular cells fully…

You grow a million cells, half of which are liver cells and half of which are va

You grow a million cells, half of which are liver cells and half of which are vascular cells, on the surface of a Petri dish at 37°C. Initially, the liver and vascular cells fully…

You h ben pui in change oahiNnuaniaion program for rubella, covering two differe

You h ben pui in change oahiNnuaniaion program for rubella, covering two different countries. Neither country has rubella vaccination at the moment. In country A, vaccination for …

You harvested spleens cells from mice infected 6 weeks earlier with a large numb

You harvested spleens cells from mice infected 6 weeks earlier with a large number of Leishmania major parasites. You want to find out the characteristics of the immune response g…

You harvested spleens cells from mice infected 6 weeks earlier with a large numb

You harvested spleens cells from mice infected 6 weeks earlier with a large number of Leishmania majorparasites. You want to find out the characteristics of the immune response ge…

You have 1 attempt to answer the questions correctly however there is no time li

You have 1 attempt to answer the questions correctly however there is no time limit for working the problems. Please be sure of your final answers before submitting your answer. Q…

You have 2 true breeding strains of a plant. Both strains have white flowers. Wi

You have 2 true breeding strains of a plant. Both strains have white flowers. Wild-type flower color in this species is red. When strain #1 was crossed to wild-type plants, the F1…