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How can genes determine phenotype?

Updated: 8/10/2023
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9y ago

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Genotype controls phenotype because genes direct the production of proteins . Proteins, in turn, dictate virtually every reaction in the cell and thus are directly responsible for observable characteristics.

How do the proteins work to direct phenotype? Some proteins serve structural functions (for example, in the maintenance of cell and/or tissue shape and rigidity) while others are involved in the transport of molecules and communication between cells. A substantial proportion of proteins are enzymes , catalyzing chemical reactions for the synthesis and transformation of virtually all biological molecules. The varying types and quantities of all biological molecules in the cells and tissues of an individual is what ultimately leads to phenotypic variation. For example, slight variation in the activity of an enzyme for pigment synthesis in a plant may result in white flowers rather than red. Likewise, a slight difference in a protein responsible for cell communication during the development of leaf tissue might result in variation of leaf shape.

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10y ago
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15y ago

The phenotype is determined by the genetic coding within the DNA, and also determined by the genes of an organism.

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14y ago

a phenotype is dettermined by the genotype. for example if the genotype is Gg (heterozygous) then the phenotype would be green if G=green and g=white

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Anonymous

Lvl 1
3y ago

The proteins they code for affect the growth and development of the organism. Apex.

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Q: How can genes determine phenotype?
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Related questions

How do you use genotype and phenotype in a sentence?

In genetics,the phenotype is when genes combine to determine dominant traits


Does proteins determine Genes?

No they are not. Proteins are synthesized as per the information present in the DNA or genes. So Genes are something which determine the phenotype or a character of an organism by making RNA and proteins.


What is the best way to determine the phenotype of the feathers on a bird?

Analyze the birds genes


What ultimately determines the phenotype of an individual?

Phenotype is what traits are expressed by the organism. So what ever is the dominant Genotype of the organism will determine the Phenotype. For example a dominant R gene will be the Phenotype in RR and Rr. However, if the organism has two recessive rr then the recessive gene will determine the Phenotype.


Use the word phenotype in a sentence?

(In genetics, the phenotype is when genes combine to determine dominant traits.) "Researchers studied the phenotype of the mutated rats."


What does the nucleus of the sperm cell do?

It carries the chromosomes, which carry the genes, that when combined with the genes carried in the egg, along with environmental factors, determine the phenotype of the offspring.


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.


Why do chromosomes determine an individuals phenotype?

Chromosomes are made of DNA and protein. DNA is the genetic material that determines the genotype and phenotype of a person. The phenotype is the genes that are expressed and observable. See the related link for further information.


What is a physical expression of genes?

A physical expression of genes is what is known as a phenotype. A phenotype gives the appearances of organisms based on how it's gene are expressed and put together in a functioning form.


Is the genotype the outward expression of a gene?

NO NO NO!!!!!a genotype refers to the actual makeup of the gene, as in the type of alleleuppercase refer to dominant genes, lowercase refer to recessive genesan expressed gene regardless of whether it is dominant or recessive is expressed in the PHENOTYPE which is the physical traits observable caused by the genotypePhenotype is what your question should be changed to and then your answer will be yes


The one gene one polypeptide hypothesis is the currently accepted hypothesis explaining how genes help to determine the phenotype of an organism?

True


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.