List and describe the steps involved when a gene in person's genotype is expressed to create a biochemical or physical characteristics that is a part of the persons phenotype.

Since this is not my area of expertise, I searched Google under the key words "steps from gene to phenotype" to get these possible sources:

http://www.google.com/search?client=safari&rls=en&q=steps+from+gene+to+phenotype&ie=UTF-8&oe=UTF-8

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

Assume that the allele controlling brown eyes (B) is dominant over that controlling blue eyes (b) in human beings. (In actu- ality, eye color in humans is an example of multigene inheritance, which is much more complex than this.) A blue-eyed man marries a brown-eyed woman, and they have six children, all brown-eyed. What is the most likely genotype of the father

Their organ system and their muscles

When a gene in a person's genotype is expressed to create a biochemical or physical characteristic that is part of the person's phenotype, several steps are involved. Here is a description of these steps:

1. Gene Transcription: The process starts with the transcription of the gene. The DNA sequence of the gene is converted into a complementary messenger RNA (mRNA) molecule through a process called transcription. This occurs in the nucleus of the cell.

2. mRNA Processing: Once the mRNA molecule is formed, it undergoes processing to remove noncoding regions called introns and join the remaining coding regions called exons together. This processed mRNA is then ready to leave the nucleus.

3. mRNA Export: The processed mRNA molecule is exported from the nucleus into the cytoplasm, where it can interact with the cellular machinery for protein synthesis.

4. Translation: In the cytoplasm, the mRNA molecule attaches to a ribosome, which reads the genetic code, consisting of three-nucleotide sequences called codons. Each codon corresponds to a specific amino acid or a signal to stop protein synthesis. Transfer RNA (tRNA) molecules bring the appropriate amino acids to the ribosome, following the instructions encoded in the mRNA sequence. This process is called translation.

5. Protein Folding: As the amino acids are added to the growing polypeptide chain during translation, the protein begins to fold into its three-dimensional structure. This folding is critical for the protein to carry out its function properly.

6. Post-translational Modifications: After the protein is synthesized, it may undergo additional modifications. These modifications can include the addition of chemical groups, such as phosphate or methyl groups, or the cleavage of certain sections of the protein. These modifications further refine the protein's structure and function.

7. Protein Transport: Once the protein is properly folded and modified, it may need to be transported to a specific location within the cell or to another organelle. This involves the assistance of transport proteins or specific targeting signals encoded in the protein itself.

8. Protein Function: Finally, the protein assumes its specific biochemical or physical function within the cell or organism. This function can vary widely depending on the protein's structure and location. It may include enzymatic activity, structural support, receptor function, or involvement in signaling pathways, among many other possibilities.

It is important to note that this description provides a generalized overview of gene expression. Depending on the specific gene and the organism involved, the process may have additional regulatory steps or factors that influence gene expression.