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1) Occasionally a person is found to have one blue eye and one brown eye. This is caused by the creation of a new mutation. In which cell did the mutation occur?a) somatic cell of that personb) germ cell of that personc) germ cell of that person's parentd) somatic cell of that person's parent2) Consider the following list.. How many are proteins that can negatively regulate expression of a target gene?Gal80 AraC lacZ TrpRLacO CAP Gal4 Gal7a) 1b) 2c) 3d) 4e) 53) Which statement is true about DNA methylation in eukaryotes?a) it is used to regulate DNA replicationb) it is used to regulate protein translationc) it is used to regulate mutation repaird) it is used to regulate heterochromatin spreadinge) it is used to regulate transcription4) Which statement is true about DNA methylation in prokaryotes?a) it is used to regulate DNA replicationb) it is used to regulate heterochromatin spreadingc) it is used to regulate mutation repaird) it is used to regulate transcriptione) it is used to regulate protein translation5) Nondisjunction of chromosomes in meiosis may take place at the first or the second meioticdivision.If nondisjunction of the XY pair of chromosomes took place at the first division in theformation of sperm,which of the following chromosomal types of sperm could be formed?a) XYb) YYc) Yd) XXe) X6) Which is a true difference between miRNA and siRNAs?a) miRNAs are processed by Dicer, siRNA are usually notb) miRNAs are found in the RISC complex, siRNAs are usually notc) siRNAs are found in the RISC complex, miRNAs are usually notd) siRNAs are processed by Dicer, miRNAs are usually note) miRNAs are transcribed from the genome, siRNAs are usually not7) Consider two transposons in yeast, Ty3 and TyZ. The DNA sequence for each contains a singlegene interrupted by an intron. The Ty elements are allowed to transpose to new locations in theyeast genome. When their DNA sequence is determined in the new location, Ty3 has no intron,and TyZ has an intron. Is either of these Ty elements a retrotransposon?a) neither Ty3 nor TyZ is a retrotransposonb) both Ty3 and TyZ are retrotransposonsc) TyZ is a retrotransposond) Ty3 is a retrotransposone) there is not enough information to tell8) What effect would a mutation in the gene encoding CAP have on expression of the lac and araoperons in E. coli?a) expression of ara would decrease; xpression of lac would be unaffctedb) expression of lac would decrease; expression of ara would be unaffectedc) they could no longer be repressed and would be constituively expressedd) they could no longer be strongly activated in the presence of inducere) they could no longer be strongly activated in the absence of inducer9)Nonhomologous chromosomes that have exchanged segments are the products of aa) pericentric inversionb) reciprocal translocationc) paracentric inversiond) double deletione) transposon insertion10) Ethyl methane sulfonate (EMS) is an alkylating agent. The mechanism of action of this type ofmutagen isa) slipping between the bases of the DNAb) cleaving the base off a nucleotidec) breaking the sugar-phosphate backboned) adding a chemical group to DNA basese) removing a chemical group from the DNA bases11) If the two Trp codons in the leader of the trp operon were changed to codons for His, what wouldbe the consequence for regulation of the trp operon?a) the trp operon would now be constitutively expressedb) expression of the trp operon would now be under transcriptional control bythe His Repressor proteinc) expression of the trp operon would show attenuation when levels ofhistidine in the cell were lowd) two of the abovee) all of the above12) Which prokaryotic transcription factor does the yeast factor GAL4 most resemble in its mode ofaction of regulating gene expressing?a) Lac Repressorb) AraCc) Rhod) CAPe) Trp Repressor
express the role of double helix in complimentary base pairing in DNA replication.
Explain the general function of Respiratory system and describe how the Respiratory system contributes to the physiological homeostasis of human organism?
There are a number of natural types of DNA. One is animal DNA, one plant DNA, another bacterial DNA.What are these two kinds of DNA.
CC DD and cc dd individuals were crossed and hte F1 generation was backcrossed to get cc dd parent. 903 Cc Dd, 897 cc dd, 98 Cc dd. c and d are 10 m.u apart.
What will be appearance of the offspring of a cross of the F1 peaches back to that smooth,oval glanded parent. How several diploid Drosophila cells would be needed to have 1 picomole of each allele.
Clarify the effects of the ecb infestation you used. Were all corn varieties evenly effective at controlling the ecb? How do you know.
Determine which organ system are msot invovled with homeostasis and discuss the role of SNARE in exocytosis.
Large folds in the stomach known ______ increase its surface area and also enable it to fold on itself when empty. The ______ is a valve that enables partially digested food out of stomach into the ______.
Explain why would temperature affect respiration rates and what is going on at the cellular level that could be impacted by either an increase or a decrease in the temperature in which an organism is found?
Most of the endosperm is missing from Capsella seeds that contain the largest embryos. Discuss what happened to the endosperm in these seeds?
Describe the structure of atp and gtp. Describe how atp is produced during chemiosmosis. Illustrate two specific cellular processes that require atp and explain how atp is used in each process.
How many different combinations of phenotypes could exist of these 7 paired traits . What proportion would be heterozygous in every trait after 2 years.
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