DNA Study Guide Flashcards Quizlet
What is dna used for? march 12, 2011, cherran, 1 comment. what is dna used for? dna or deoxyribonucleic acid contains the genetic make-up or properties of all living read and learn for free about the following article: dna structure and function
Dna instructions are passed from parent to child, another difference is that rna does not contain the base thymine (t), which is replaced by uracil (u). deoxyribonucleic acid (dna) is the chemical compound that contains the instructions needed to develop and direct the activities of nearly all living organisms. dna molecules are made of two twisting, paired strands, often referred to as a double helix.
This nucleus contains the dna, the hereditary material. how does dna support rna and how does rna support protein? loading... replyon feb 20, 2016, 9:12 am read and learn for free about the following article: dna structure and function
Dna instructions are passed from parent to child, another difference is that rna does not contain the base thymine (t), which is replaced by uracil (u). genes contain the instructions for building proteins. 8. what is a chromosome? chromosomes are packages of compact dna. 9. how many chromosomes does a human cell hold? each human cell holds 46 chromosomes. 10. how are the human sex chromosomes labeled? sex chromosomes are labeled вђњxвђќ and вђњyвђќ. 11. how many вђ¦
But the mechanism whereby the hereditary information is copied for transmission from cell to cell, and how proteins are specified by the instructions in the dna, remained completely mysterious. suddenly, in 1953, the mystery was solved when the structure of dna was determined by james watson and francis crick. this glycosylase does not remove uracil residues from rna or thymine residues from dna. the capacity to distinguish thymine from uracil, the product of cytosine deamination necessary for the selective repair of the latter may be one reason why dna evolved to contain thymine instead of uracil.
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