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Does a promoter determine whether a gene is expressed?
No it does not a promoter is a binding site for RNA polymerase.
An expressed gene is one that what?
a gene being expressed means it is shown, for example if you have the gene for brown eyes and the gene for blue eyes, only one can be expressed. if you have brown eyes that gene is expressed, if not the blue-eye gene is expressed.
Is an expressed gene turned off?
No. If a gene is expressed, it is turned on.
Which parts of a gene are expressed as protein?
Coding sequences of a gene are expressed as protein
What are genotype determinants?
'Genotype determinants' are just another set of words to describe alleles, because an allele is what determines your genes. An allele is basically an alternative forms of a gene. Humans have 2 forms (2 alleles) for each gene (except in sex cells) one from your mom, one from your dad. The allele occupies a fixed position (locus) on the chromosome and, depending on whether or not it is dominant or recessive, it determines the phenotypes- or how the gene will be physically expressed. A Example of recessive alleles: widows peak- you need two 'widows peak' alleles to have that feature physically expressed. If you have 1 widows peak allele and another for 'no widows peak' then the dominant form will be expressed, in this case it means you will not have a widows peak.
What factor determines whether a particular phenotype occurs more frequent than others in certain population?
Gene frequency
What does it mean for a gene to be off?
How is a gene not expressed
What gene that is always expressed and will produce a trait?
The gene that is always expressed and will produces a trait is a genetic statistic. This statistic is what is created when the gene is dominant.
Can everyone smell asparagus in their pee?
No. Strangely enough it is a single gene that determines whether the asparagus produces smelly pee - so it is an inherited thing. Some people have the gene, some don't.
What is meant by dominat and ressesivegene give an exampleof each?
A dominant gene refers to a gene that is expressed over another gene in the same position on a chromosome. It will always show its trait in the individual's phenotype if it is present in their genotype. For example, if a person inherits a dominant gene for brown eyes, they will have brown eyes regardless of whether they also have a recessive gene for blue eyes. On the other hand, a recessive gene refers to a gene that is not expressed when there is a dominant gene present. It is only expressed in the phenotype when there are two copies of the recessive gene in the genotype. An example is the gene for blue eyes, which will only be expressed when an individual has two copies of the recessive gene and no dominant gene for brown eyes.
What is is the principal of dominance?
One gene on a chromosome is expressed, while the other gene on the homologous chromosome, being recessive, is not expressed.
What does a gene code message determines?
It determines the sequence of amino acids in a protein.
