In 1997, Dolly the sheep was cloned by a technique called somatic-cell nuclear transfer (or nuclear-transfer cloning). A nucleus from an adult mammary cell was transferred into an egg from which the nucleus had been removed. The egg was allowed to divide several times in culture, then the embryo was transferred to a surrogate mother who gave birth to Dolly. Dolly died in 2003 after mating and giving birth herself to viable offspring. What does the creation of Dolly tell us about the potential of nuclear material derived from a fully differentiated adult cell? Does the creation of Dolly tell us anything about the potential of an intact, fully differentiated adult cell?

Q: One way that researchers create a cell line that is "immortal" (divides forever in culture) is by…

A: Telomeres are repetitive sequences of DNA that are present at the ends of the chromosomes and help…

Q: The p53 gene was discovered in 1979, but it was not clear whether the gene functioned as an oncogene…

A: An oncogene is a type of gene that is responsible for causing the cells to divide uncontrollably and…

Q: The rb gene encodes a protein that inhibits E2F, a transcriptionfactor that activates several genes…

A: Abnormal and unnecessary growth of cells termed cancer. Mutations in DNA causes cancer. In the…

Q: How can I Explain  with diagram how mitotic crossover (recombination) lead to cancer.

A: Mitotic recombination is a main source of the genetic variability of primitive organisms. It…

Q: Put a checkmark next to any of the following scenarios that would make it MORE likely that a cell…

A: Need to find all the options that produce uncontrollable cell division  and to increase chance of…

Q: In recombinant chromosomes, where is gene conversion likely totake place: near the breakpoint or far…

A: Gene conversion is a process in which a homologous sequence is replaced by the one DNA sequence in a…

Q: HeLa cells are a line of cells grown in laboratory culture that has been used extensively in…

A: Cancer is a disease which is caused by the uncontrolled growth of the cells, without regulation of…

Q: Most forms of cancer are caused by environmental agents that produce mutations in somatic cells. Is…

A: Environmental factors have been known to trigger a lot of the mutations which develop into cancerous…

Q: vitro to find a match for their child. What do they need to match in this transplant procedure?…

A: A bone marrow transplant is a medical procedure performed to replace bone marrow that has been…

Q: In yeast, you have sequenced a piece of wild-type DNA and it clearly contains a gene, but you do not…

A: To find the mutated genes one must code all the amino acid of the genetic modified yeast and normal…

Q: Rb and Ink4 Cdk inhibitors are able to slow cell cycle progression. : a) True b) False

A: The cell cycle is a series of events that occur in a cell leading to its division and duplication.…

Q: According to the multi-hit model, more than one mutation must occur in a cell for cancer to develop.…

A: A new multihit model of carcinogenesis is produced for use in assessing age-explicit disease rate…

Q: Which of the following is an example of a proto-oncogene? 1) cell cycle inhibitor 2) tumor…

A: Oncogene The gene that are cancerous and divide cell abnormally.

Q: Since all cells contain the same number of chromosomes and the overall same/similar genome how would…

A: In multicellular organisms, cells with the same genetic material can exhibit diverse functions and…

Q: In somatic cell nuclear transfer, the nucleus of a somatic cell is inserted into an enucleated egg.…

A: A somatic cell nucleus refers to a cell whose nucleus has a diploid set of chromosomes which means…

Q: What is somatic DNA recombination? How is it used by the cell in DNA repair?

A: **According to Bartleby's guidelines, only one question from a set of unrelated questions can be…

Q: Daisy inherits a mutation from her mother that results in the phenotype of red hair. Evegny acquires…

A: Introduction:- The DNA sequence varies from creature to organism. The order of the base pairs can…

Q: Which of these chromosomal rearrangements will result in formation of a loop during prophase I if an…

A: The chromosome is a thread like structure. It is made up of DNA, histone and non histone proteins.

Q: Some initial studies looking at the carcinogenicity of tobacco products took extracts from those…

A: Introduction: When we inhale cigarette smoke, tar, a sticky, brown material, gathers in our lungs.…

Q: A controversial issue, closely related to cloning, that has caused a lot of debate is the use of…

A: Based on the above statements , I would go in for of stem cell research.  By definition, stem-cell…

Q: As you are performing this protocol, you realize that the ultraviolet (UV) light does not work as…

A: Introduction A gene is a DNA segment that encodes for protein or RNA (ribonucleic acid). It is the…

Q: You are working with a strain of mutant flies that have no wings. You apply gamma rays to your…

A: The genes are located on the chromosome. So genes are actually a particular DNA sequence. DNA is…

Genomics

Genes are responsible for transmitting the characters located on the chromosomes from one individual to another across the generations. Genetics is the study of different genes that are involved in different functions. Genetics is a branch of biology that studies genes, genetic diversity, and heredity in living organisms. The genetic system consists of genetic notations, which is a system of signs and symbols. Genotype refers to the organism's genetic composition, and phenotype refers to the observable property of the organism.