Recitation 6 - MIT OpenCourseWare
... DNA replication occurs in a semi-conservative fashion. This means that, when one double-stranded molecule of DNA is replicated, the original double-stranded molecule is unraveled such that it is two separate “old” strands. Then each “old” strand acts as a template for one “new” strand. At the end of ...
... DNA replication occurs in a semi-conservative fashion. This means that, when one double-stranded molecule of DNA is replicated, the original double-stranded molecule is unraveled such that it is two separate “old” strands. Then each “old” strand acts as a template for one “new” strand. At the end of ...
Unit 6 Packet - Ms. Ottolini`s Biology Wiki!
... Topic 2: DNA Replication 12. The process of DNA replication is important before a cell divides. Why is this the case? ...
... Topic 2: DNA Replication 12. The process of DNA replication is important before a cell divides. Why is this the case? ...
DNA - Liberty Union High School District
... Hydrogen Bonds, cont. • When making hydrogen bonds, cytosine always pairs up with guanine • Adenine always pairs up with thymine • Adenine is bonded to thymine here ...
... Hydrogen Bonds, cont. • When making hydrogen bonds, cytosine always pairs up with guanine • Adenine always pairs up with thymine • Adenine is bonded to thymine here ...
Directed Reading A
... Match the correct description with the correct term. Write the letter in the space provided. ...
... Match the correct description with the correct term. Write the letter in the space provided. ...
This is a picture of:
... The diagram above represents the cellular processes of transcription and translation. What word best replaces X in the last box? a) ribosome b) tRNA c) protein d) codon ...
... The diagram above represents the cellular processes of transcription and translation. What word best replaces X in the last box? a) ribosome b) tRNA c) protein d) codon ...
DNA Replication
... DNA and proteins make up chromosomes – contain traits sections of it make up genes ...
... DNA and proteins make up chromosomes – contain traits sections of it make up genes ...
dna structure - Siegel Science
... concern with cell division is the maintenance of the cell’s GENETIC information. Before a CELL can divide, genetic information in chromosomes must be replicated (i.e. DNA replication) ...
... concern with cell division is the maintenance of the cell’s GENETIC information. Before a CELL can divide, genetic information in chromosomes must be replicated (i.e. DNA replication) ...
Gene Cloning And DNA vs - Mr. Lesiuk
... every new bacterium will contain a copy of this newly inserted foreign gene. Eventually there will be many copies of this foreign gene. Illustrating rDNA formation and use: ...
... every new bacterium will contain a copy of this newly inserted foreign gene. Eventually there will be many copies of this foreign gene. Illustrating rDNA formation and use: ...
Molecular genetics of bacteria
... DNA replication • Origin of DNA replication: particular site on DNA where copying of the DNA always starts. – Replication is bidirectional – In each direction, there is a replication fork. – Bacterial DNA is circular, so there is one Origin and one ...
... DNA replication • Origin of DNA replication: particular site on DNA where copying of the DNA always starts. – Replication is bidirectional – In each direction, there is a replication fork. – Bacterial DNA is circular, so there is one Origin and one ...
Chapter 15 Genetics Engineering
... S What was the first animal to be cloned that you heard of ? S Dolly the sheep S When did this happen? S July 5th, 1996 S Did she die? S February 14th, 2003 ...
... S What was the first animal to be cloned that you heard of ? S Dolly the sheep S When did this happen? S July 5th, 1996 S Did she die? S February 14th, 2003 ...
Fruitful DNA Extraction
... absence of a placenta, can be used to determine the evolutionary relationships between organisms. These morphological characters are part of an organism’s phenotype, which is any observable quality of an organism, such as its morphology or behavior. We can also use molecular characters to determine ...
... absence of a placenta, can be used to determine the evolutionary relationships between organisms. These morphological characters are part of an organism’s phenotype, which is any observable quality of an organism, such as its morphology or behavior. We can also use molecular characters to determine ...
DNA Structure
... A person has 46, or 23 pairs, of chromosomes. Each chromosome contains two halves that join in the middle so they look like an X. The two halves of each chromosome come from the two parents. One half of the X in each chromosome comes from the mother and the other half comes from the father. The two ...
... A person has 46, or 23 pairs, of chromosomes. Each chromosome contains two halves that join in the middle so they look like an X. The two halves of each chromosome come from the two parents. One half of the X in each chromosome comes from the mother and the other half comes from the father. The two ...
Introduction to Biotechnology Gel Electrophoresis and DNA Analysis
... Gel Electrophoresis and DNA Analysis: Post Lab 1. What functional group is resposible for DNA’s negative charge? Draw and name it. Phospate: PO4-3 ...
... Gel Electrophoresis and DNA Analysis: Post Lab 1. What functional group is resposible for DNA’s negative charge? Draw and name it. Phospate: PO4-3 ...
Lecture 3
... • In 1953, James Watson and Francis Crick proposed that DNA is a double-stranded molecule twisted into a helix (the double helix structure) • Each spiraling strand, comprised of a sugarphosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding bet ...
... • In 1953, James Watson and Francis Crick proposed that DNA is a double-stranded molecule twisted into a helix (the double helix structure) • Each spiraling strand, comprised of a sugarphosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding bet ...
DNA repair
DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental factors such as UV light and radiation can cause DNA damage, resulting in as many as 1 million individual molecular lesions per cell per day. Many of these lesions cause structural damage to the DNA molecule and can alter or eliminate the cell's ability to transcribe the gene that the affected DNA encodes. Other lesions induce potentially harmful mutations in the cell's genome, which affect the survival of its daughter cells after it undergoes mitosis. As a consequence, the DNA repair process is constantly active as it responds to damage in the DNA structure. When normal repair processes fail, and when cellular apoptosis does not occur, irreparable DNA damage may occur, including double-strand breaks and DNA crosslinkages (interstrand crosslinks or ICLs).The rate of DNA repair is dependent on many factors, including the cell type, the age of the cell, and the extracellular environment. A cell that has accumulated a large amount of DNA damage, or one that no longer effectively repairs damage incurred to its DNA, can enter one of three possible states: an irreversible state of dormancy, known as senescence cell suicide, also known as apoptosis or programmed cell death unregulated cell division, which can lead to the formation of a tumor that is cancerousThe DNA repair ability of a cell is vital to the integrity of its genome and thus to the normal functionality of that organism. Many genes that were initially shown to influence life span have turned out to be involved in DNA damage repair and protection.