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rss_genetics_lesson
rss_genetics_lesson

... DNA determine the hereditary traits of an organism and contains all the information needed for the production of proteins. RNA aids in protein synthesis in the ribosome by transcribing and translating DNA. Inheritance depends on the pair of alleles from the parent chromosome, and variability depends ...
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Introduction to Molecular Biology, Part 1
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北京大学生命科学学院

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Goal 3.01 Quiz 1

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... What exactly are they made of? How do they affect an organism? How do genes actually work? What exactly are genes made of? 1.1 DNA the Genetic Material Historical progress and context of the search for the answers to these questions:  1869 Miescher found what was later to be known as DNA in the nuc ...
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Exam 2
Exam 2

... 5. In the Hershey-Chase experiment that showed DNA was the genetic material in bacterial viruses (called bacteriophages), radioactively labeled bacterial viruses were used to infect E. coli. Why were the radioactive 32P and 35S elements chosen for this experiment (in other words, why were P and S ch ...
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Lab 6: DNA and RNA: The “ART” of the Central Dogma Introduction

... is used to translate proteins and (3) transfer RNA (tRNA) which is also used to translate proteins. Answer the Transcription questions section Part 4: Translation Translation is the process of reading the instructions carried by the mRNA into protein. Translation is carried out by ribosomes which ar ...
Answers to Exam Practice Questions 1. Mitosis produces two
Answers to Exam Practice Questions 1. Mitosis produces two

... 17. Many proteins are enzymes which catalyze and regulate chemical reactions. A gene that codes for an enzyme to produce pigment can control the color of a flower. Another gene could control the production of red blood cells. 18. Most mutations have little to no effect on the individual, however mu ...
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Helitron (biology)

A helitron is a transposon found in eukaryotes that is thought to replicate by a so-called ""rolling-circle"" mechanism. This category of transposons was discovered by Vladimir Kapitonov and Jerzy Jurka in 2001. The rolling-circle process begins with a break being made at the terminus of a single strand of the helitron DNA. Transposase then sits at this break and at another break where the helitron targets as a migration site. The strand is then displaced from its original location at the site of the break and attached to the target break, forming a circlular heteroduplex. This heteroduplex is then resolved into a flat piece of DNA via replication. During the rolling-circle process, DNA can be replicated beyond the initial helitron sequence, resulting in the flanking regions of DNA being ""captured"" by the helitron as it moves to a new location.
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