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No you may have a recessive gene being covered up by a dominant gene say you have brown hair your kids may have blond hair if your ancestors passed along blond and brown hair.
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∙ 16y ago
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What is the difference between a karyotype and a phenotype?
The phenotype is what you will see when genes are expressed in an organism. Karyotype is all the genes in an organisms DNA.
How is the way hox genes are expressed in mice different to the way they are expressed in fruit flies?
Hox genes in mice and fruit flies are expressed similarly in that the genes themselves are similar enough to trade places and still function. The genes are expressed different because although you can switch the genes around, the outcome will result in the improper physical characteristic.
What we call the observable expression of genes present in an organism?
When genes are expressed, the result is called phenotype. What is actually in all the genes (some are recessive) is called the genotype.
The phenotype of an animal typically does not depend on?
how the genes of the animal are expressed
What three critical gene functions did scientists identify?
First: genes have to carry info from one generation to the nextSecond: they have to put that info to work by determining the heritable characteristics of organismsThird: genes have to be easily copied, because all of a cell's genetic info is replicated every time the cell divides
Are Genes present in heterochromatin readily expressed?
No. Heterochromatic regions of DNA are not readily expressed as they are densely packaged. Some of these regions do not code for genes at all.
What is a set of prokaryotic genes that are regulated and transcribed as a unit?
They are operons. The genes contained in an operon are expressed together or not at all.
What is the difference between a karyotype and a phenotype?
The phenotype is what you will see when genes are expressed in an organism. Karyotype is all the genes in an organisms DNA.
An expressed gene is one that?
is transcribed into RNA. Promoters (I think that's what you meant, right?) don't function as genes; they stand as a signal for RNA polymerase to begin transcription of the actual gene, which begins about 25 base pairs downstream of the promoter region in eukaryotic DNA. Expressed genes DO code for proteins, but not all protein-coding genes are expressed. For example, the cells in your heart contain genes that code for proteins needed only in your liver. While those genes definitely code for proteins, they're not expressed. Expressed genes (and non-expressed genes, Ke$ha Looks like a man, for that matter) are made of DNA, not mRNA.
How do genes make a phenotype?
They are expressed.
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What genes are expressed even when present on only one chromosome?
dominant genes
How is the way hox genes are expressed in mice different to the way they are expressed in fruit flies?
Hox genes in mice and fruit flies are expressed similarly in that the genes themselves are similar enough to trade places and still function. The genes are expressed different because although you can switch the genes around, the outcome will result in the improper physical characteristic.
What molecules are genes expressed through?
aids
What trait is is expressed when two diffrent genes for the same trait are present?
A dominant trait is expressed when two different genes for the same trait are present.
What gene is always expressed?
Dominant genes will always be expressed however recessive genes would need to be inherited from both parents
What is the differencs between dominant and recessive?
Dominant genes are genes that are expressed more readily than recessive genes, i.e. if you had a genotype that was AaBb, A being for brown hair, a for blonde hair, B for brown eyes, b for blue, you would have brown hair and brown eyes as the genes for those phenotypes are dominant. For recessive genes to be expressed in the phenotype the gamete needs to have recessive genes for both "slots", e.g. AA for blonde hair to be expressed or bb for blue eyes to be expressed. Edd
