Genes encode the information necessary for synthesizing the amino-acid sequences in proteins, which in turn play a large role in determining the final phenotype, or physical appearance, of the organism. In diploid organisms, a dominant allele on one chromosome will mask the expression of a recessive gene on the other.
The phrase to code for is often used to mean a gene contains the instructions about how to build a particular protein, as in the gene codes for the protein. The "one gene, one protein" concept is now known to be simplistic. For example, a single gene may produce multiple products, depending on how its transcription is regulated. Genes code for the nucleotide sequences in mRNA, tRNA and rRNA, required for protein synthesis.
Gametes (sperm and egg) are haploid cells; that is, they contain one complete set of chromosomes (the actual number varies from species to species). When two gametes unite (typically in animals, involving a sperm and an egg), they form a zygote — a cell having two complete sets of chromosomes and therefore diploid. The zygote cell receives one set of chromosomes from each of the two gametes involved in the union. After fusion of the two gamete nuclei, and after multiple cell divisions and cellular differentiation, a zygote develops, first into an embryo, and ultimately into a mature individual capable of producing gametes. Gametes from a mature diploid individual will be produced in the gonadal tissue through meiosis—a process of cellular division that reduces the number of sets of chromosomes from two to one (i.e., produces haploid gametes).
2006-09-14 09:14:09
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answer #1
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answered by DanE 7
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Not the specific gene but the entire set of all genome in a person is responsible & hence codes for genetic make up of an individual.
2006-09-16 09:22:31
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answer #2
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answered by smalleyessharpviews 3
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What else are genes for, than to code for genetic make up?
They are located on the chromosomes that are present in every cell.
2006-09-14 09:16:47
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answer #3
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answered by Hi y´all ! 6
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Yes a genetic code are the blueprints of every living thing, they are located in the chromosomes in the nucleus of a cell.
2006-09-14 14:24:14
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answer #4
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answered by Anonymous
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unless they are talking about the capacity of someone putting some "make up" on you face like lipstick etc... in this case I think a lot of people are missing the genes. Specially when you get older and the make up get worse, it's probably because the genes are malfunctioning...
2006-09-14 09:21:08
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answer #5
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answered by pinkish 1
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