Through GWAS explorations, scientists have identified several SNPs linked to obesity in people who livein the United States. One of these SNPs was within agene called FTO. Interestingly, a common FTO variant is associated with obesity, but only in people bornafter 1945. Moreover, the later the birth year, thehigher the risk for obesity associated with this variantof FTO. Why would a genetic risk factor for obesityvary by birth year?

Q: What phenotypes do you think a homozygous tra1hsn animal with a loss of function Egl-1 mutation…

A: The phenotype is the physical appearance or observable trait of an individual genotype. The…

Q: Suppose a genome-wide association study (GWAS) investigation found a particular single nucleotide…

A: A sort of genetic difference within humans can be called single nucleotide polymorphisms or SNPs.…

Q: When during the development of most mammals is lactose available for use by E. coli in the gut? How…

A: Each warm blooded creature on the earth is inhabited with Escherichia coli (E. coli) , just as cold…

Q: Both ADA-SCID and type I diabetes are diseases based on lack of a particular protein. Why has the…

A: ADA means Adenosine deaminase deficiency and SCID is severe combined immunodeficiency.  ADA-SCID is…

Q: Researchers have identified a gene in humans that (when mutant)causes severe dwarfism and mental…

A: Firstly, let's assume that we have isolated the normal gene from a healthy human, say gene X…

Q: When a particular mutagen identified by the Ames testis injected into mice, it causes the appearance…

A: Cancer is considered to be a disease that has abnormal cell growth that can invasive. The cancerous…

Q: David Seligson and his colleagues examined levels of histone proteinmodification in prostate tumors…

A: The histone protein modification refers to the post translational modification of histones by…

Q: ''The chemical carcinogen dimethylbenz[a]anthra-cene (DMBA) must be an extraordinarily specific…

A: Abnormal growth of skin cells when exposed to sunlight causes skin cancer. They are originated from…

Q: How many of the mutations listed below would lead to excessive cell growth when the cell was either…

A: Excessive growth occurs when a cell continuously divides and when there is no cell cycle arrest. Myc…

Q: afa Q a/a Q Unsupplemented Supplemented b A"/a offspring Unsupplemented mother Supplemented mother…

A: Given information The cross involved is Awa x aa. One group of offspring with supplemented mother…

Q: When 1 million cells of a culture of haploid yeastcarrying a met− auxotrophic mutation were plated…

A: Mutations can cause a novel mutant allele to revert to wild type in a process called reverse…

Q: Which of the following experimental observations suggest that adisease has a genetic basis?A. The…

A: Gene is a functional unit of heredity. A gene is a sequence of nucleotides in genome that codes for…

Q: What phenotypes do you think a homozygous tra1hsn animal with a gain of function mutation in the…

A: Mutation changes genotype frequencies by continually implementing new alleles, that can be…

Q: From gene expression studies on development of the gut, you have decided to study a gene called…

A: Gene expression is the process where the information encoded in a gene is used to direct the…

Q: O A. Screen thousands of strains for a spontaneous unc-22 mutation O B. Soak worms in mutagenic…

A: In RNA silencing microorganisms are used to silence or negatively affect the gene expression. It is…

Q: Differential gene expression describes how... (Choose the answer the best illustrates the definition…

A: The expression of genes in for transcription that is the production of RNA from DNA. After the RNA…

Q: A O 1 2 3 456 7 8 9 CG site number 1 2 3 4 5 6 7 8 9 CG site number *p<0.05 ##p<0.01 The viable…

A: The study discussed in the question examines the impact of BPA exposure on the methylation of the…

Q: Many genes whose expression is turned on by DNAdamage have been isolated. Loss-of-function mutations…

A: The lex A gene encodes a repressor protein and is involved in controlling the DNA repair, inhibition…

Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.