False. Mostly. The genotype refers to a gene which has one or more alleles. Alleles cause variation such as differences in hair colour, eye colour, height and most things. In terms of general human functions, enzyme types are pretty standard, and the number of enzymes is controlled by the pancreas/other enzyme-making organs. But if someone had a deficiency (ie Diabetes), that can have genetic factors which inhibit enzyme activity. So in general no, except for when the genotype causes a disease.
A gene is a string of nucleotides that carries the information necessary for a cell to express a particular trait. Genes provide the instructions for producing proteins, which ultimately determine an organism's characteristics.
Yes, DNA binding proteins can influence gene expression by binding to specific sites on the DNA and either promoting or inhibiting gene transcription. These proteins can act as activators to enhance gene expression or repressors to suppress gene expression, thus controlling whether a gene is turned on or off.
Transcription is the process where genetic information in DNA is copied into RNA. This RNA is then used to make proteins, which are essential for gene expression. Gene expression refers to the process where the information in a gene is used to create a functional product, like a protein. Transcription is a key step in gene expression because it produces the RNA needed to make proteins. Therefore, transcription and gene expression are closely related and influence each other in the process of creating proteins from genetic information.
No, the lac operon is not the only example of genes regulated by repressor proteins. There are many other gene regulatory systems where repressor proteins play a role in controlling gene expression. Examples include the trp operon, the ara operon, and the gal operon in bacteria.
Each gene is composed of a regulatory chemical called DNA. DNA contains the instructions for making proteins, which are essential for various functions in the body. The sequence of DNA within a gene determines the specific protein it will produce.
gene
A gene is a string of nucleotides that carries the information necessary for a cell to express a particular trait. Genes provide the instructions for producing proteins, which ultimately determine an organism's characteristics.
A gene is the string of triplets that specifies a particular protein.
Yes, DNA binding proteins can influence gene expression by binding to specific sites on the DNA and either promoting or inhibiting gene transcription. These proteins can act as activators to enhance gene expression or repressors to suppress gene expression, thus controlling whether a gene is turned on or off.
False. Cystic fibrosis is caused by a mutation in the CFTR gene, which is a recessive allele. An individual must inherit two copies of the mutated gene (one from each parent) to develop the condition.
Transcription is the process where genetic information in DNA is copied into RNA. This RNA is then used to make proteins, which are essential for gene expression. Gene expression refers to the process where the information in a gene is used to create a functional product, like a protein. Transcription is a key step in gene expression because it produces the RNA needed to make proteins. Therefore, transcription and gene expression are closely related and influence each other in the process of creating proteins from genetic information.
False. During meiosis, the two alleles for each gene can separate and be distributed to different gametes. This is known as Mendel's law of independent assortment, which allows for new combinations of alleles to be formed in offspring.
well the gene code itself, each codon (and anti-codon) codes for different proteins
Enhancers do not directly bind to repressor proteins. Enhancers typically bind to activator proteins, which in turn help recruit RNA polymerase to the promoter region of a gene, leading to gene transcription. Repressor proteins, on the other hand, bind to specific DNA sequences to inhibit gene transcription.
Each cell produces only the proteins it needs.
No, the lac operon is not the only example of genes regulated by repressor proteins. There are many other gene regulatory systems where repressor proteins play a role in controlling gene expression. Examples include the trp operon, the ara operon, and the gal operon in bacteria.
ribosomes