This is valid because you require the gene's primers before you can use PCR to amplify a gene segment.
How does a gene work?
The fundamental genetic component transferred from parents to offspring. Genetics were comprised of Nucleotide sequence and thus are scrolled at specific locations of chromosomes in the nucleus.
Which genes are examples?
Many of your characteristics, like your skin and hair colors, are determined by genes that are handed down to you. Perhaps Emma's mother carries both the brown and red hair genes, thus she handed Emma the red hair gene. Her red hair might be explained if her father carries two red hair genes.
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