Categories
trends

What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Explore in :

Top 10 Results

1.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Conversely, dominant mutations often lead to a gain of function. For example, dominant mutations may increase the activity of a given gene product, confer a new activity on the gene product, or lead to its inappropriate spatial and temporal expression. Dominant mutations, however, may be associated with a loss of function.

2.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

What kind of mutation would lead to an increase in the expression (or inappropriate expression) of a gene? A mutation that lowers the efficiency of a repressor binding. Suppose that a certain enzyme is synthesized whenever the solution in which the cells are growing lacks substance X. When substance X is present, the enzyme is produced only …

3.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

What kind of mutation would lead to an increase in the expression (or inappropriate expression)of a gene? Free. Unlocked . Multiple Choice . Unlock to view answer. Q08 Q08 Q08 . Which change would lead to a decrease in the expression of a gene? Free. Unlocked . Multiple Choice .

4.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Which of the following would lead to an increase in the expression (or inappropriate expression) of gene X? a. A mutation that lowers the efficiency of a repressor of gene X b. A mutation that lowers the efficiency of an activator of gene X c. A mutation that increases the efficiency of a repressor of gene X d. Both a and c e. Both b and c

5.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Which of the following would lead to an increase in the expression (or inappropriate expression) of gene X? A. A mutation that lowers the efficiency of a repressor of gene X B. A mutation that lowers the efficiency of an activator of gene X C. A mutation that increases the efficiency of a repressor of gene X D. Both a and c E. Both b and c

6.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

A mutation in the DNA of a promoter or enhancer region may increase the binding ability of a transcription factor, which may then lead to the increased transcription and anomalous gene expression that is seen in cancer cells.

7.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

A mutation, which may arise during replication and/or recombination, is a permanent change in the nucleotide sequence of DNA. Damaged DNA can be mutated either by substitution, deletion or insertion of base pairs. Mutations, for the most part, are harmless except when they lead to cell death or tumor formation.

8.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Analogous to the concept that an existing mutation can be suppressed by overexpression of another gene, the phenotype of a mutation can be enhanced by overexpression of a second gene. In its most severe form, when overexpression causes lethality in a mutant strain but not in a wild-type background, this phenomenon is termed synthetic dosage …

9.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

Point mutations are the most common type of gene mutation. Also called a base-pair substitution, this type of mutation changes a single nucleotide base pair. Point mutations can be categorized into three types: Silent Mutation: Although a change in the DNA sequence occurs, this type of mutation does not change the protein that is to be produced …

10.What kind of mutation would lead to an increase in the expression, or inappropriate expression, of a gene?

The expression of the gene that encodes cyclin A varies considerably across the cell cycle, reaching a peak at the G2 phase. Based on this information, one can conclude that cyclin A is A) a transcription factor. B) encoded by a constitutive gene. C) encoded by an inducible gene. D) part of an operon.

News results

1.Emerging roles of E2Fs in cancer: an exit from cell cycle control

Deregulated expression … increase in E2F activity caused by amplification has cell proliferation-independent functions in cancer. Mutations of the retinoblastoma tumour suppressor gene (RB1 …

Published Date: 2009-11-01T12:00:00.0000000Z

1  Examples of Genetic Mutations | Gene Protein Relationship | Medical Videos | V-Learning
This sqadia.com medical video lecture solely explains the examples of genetic mutations. Maham Afridi begins by explaining complex genetics of cystic fibrosis, variations in one gene one protein hypothesis, and mutation in DNA sequence such as beta thalassemia. After that tandem repeats, dyskeratosis congenita, in conjunction with transposable …
Watch Video: https://www.youtube.com/watch?v=UXldduHMJfQ

1.Evolution

change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are…

2.Carcinogenesis

expressed at inappropriately high levels, or altered genes that have novel properties. In either case, expression of these genes promotes the malignant phenotype…

3.Cell nucleus

way to promote cell function. The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expressionthe nucleus…

Leave a Reply