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Q: Why don't cells inactivate the mutant gene?
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How do you use mutant in a sentence?

Scientists were studying a mutant gene.


Are mutant genes helpful or harmful?

they can be both if the mutant gene causes the organism to have a new property which improves its life it is helpful and evolution occurs since due to natural selection offspring having the mutant quality will be produced. on the other hand if a mutant gene causes a deformity, or a weakness it is harmful. for example cancer cells, which eventually form a tumour are the result of mutation


What could cause a mutant fly embryo to develop two tail ends but no head?

This is called bicoid mutant phenotype, and is caused by a maternal effect gene which is a gene that, when mutant in the mother, results in a mutant phenotype of the offspring regardless of the offspring's genotype.


A mutant of a regulatory gene that causes cancer?

oncogene


What type of gene is used to distinguish bacteria that carry a plasmid containing foreign DNA from those that don' t?

The plasmid that contains foreign DNA is engineered to also carry an antibiotic resistance gene. This antibiotic resistance gene codes for a protein that is able to inactivate an antibiotic thus keeping the cell alive. In the absence of the antibiotic resistance gene, the cells would not survive when exposed to an antibiotic. After transfection (the process of inserting the plasmid carrying the foreign gene into cells), the cells are gown in media containing an antibiotic. Cells that contain the plasmid (and therefore contain the antibiotic resistance gene) are able to survive in this medium. Cells that do not contain the plasmid (and therefore lack the antibiotic resistance gene) do not survive in this medium. The process described above is called selection


Is there a definition of a mutant in any of the X-Men comic book series?

Yes.When a human is born with the mutant gene you are a mutant. But if you get the abilities later in life(ex.Spiderman) you are mutated.


How storm became mutant?

In the Marvel Universe, mutants like Storm are born with a special gene, referred to as the X-Gene. Usually when a mutant reaches puberty their powers and physical mutants appear.


Why dont skin cells make insulin?

because the gene to make insulin isn't expressed


How gene therapy is used to treat genetic disorders?

Gene therapy is a method that aims to cure inherited diseases by providing the patient with correct copy of the defective gene. There are four potential approaches to gene therapy:1)Addition of normal gene to replace the function of defective gene. This is gene replacement orgene augmentation therapy.2)Replacing the defective gene with the correct gene. This isCorrective gene therapy.3)Establishment of alternative pathways that bypass mutant genes function4)Change in regulation of normal or mutant genesThe first two are the basic approaches in gene therapy


Which of the following statements about a gene that shows maternal effect inheritance is true?

Offspring will show a mutant phenotype if the mother has a mutant genotype.


What does it mean to be heterozygous for a gene?

homozygous mutant means both alleles of a gene are mutated.


What is the definition of genomic footprinting?

Same as genetic footprinting, only at a high throughput, systems level way. Typically you use a transposon library to insert mutations to cells that inactivate genes (you assume one transposon/inactivation per cell). Then you trascription profile (dna microarray, rna-seq) after selection (whatever you want to select for, growth, resistance etc) and try to map the mutations/genes inactivations to the fitness changes in the cells. For example if you select for growth in a particular environment and the deletion of a gene confers this, then during selection that mutant will be over-represented, so when you run a microarray, you will see no expression of the deleted gene in reference with the wild type strain.