how are cells and bodies made from the instructions in DNA Regents Biology! Regents Biology! DNA ! Proteins ! Cells !
Explain how DNA replicates? What are some characteristics of the structure of DNA? Explain complementary base pairing. 15. Describe in detail the phases of mitosis.
Answer the following questions as you proceed. Forensic Biology: Follow Greg and answer the following questions. What is DNA? The genetic make up of all living things After taking DNA from Suspects A & B –
To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating (. DNA has a double helix structure and has two strands running in opposite directions (UIC, 2013). 2. How does an organism’s genotype determine its phenotype? Genotype determines the genetic makeup of an individual organism.
What question does Sydney Brenner ask in “Defining the gene?” Explain why this was an important question to understand how DNA codes for protein. How does the sequence of bases correspond to the sequence of amino acids? 7. George Gamow thought that three bases in DNA corresponded to one amino acid. To confirm this idea, Marshall Nirenberg used a synthetic RNA containing only one kind of base.
2. What is a medulla? What do forensic scientists use this for? Medulla is a set of cells that run through hair. They use medulla to use it as evidence to find the suspect.
As part of an undergraduate project, a student was attempting to construct a restriction map for the plasmid pUC23 using the restriction enzymes EcoRI and BamHI. After carrying out both single and double enzyme digest reactions and electrophoresing each reaction mix through an aragose gel, the picture below is obtained, showing the number of DNA fragments produced in each reaction, along with the sizes of each fragment. From this information, construct a restriction map of the pUC23 for enzymes EcoRI and BamHI. Digest Performed: Sizes of Fragments Obtained:
In 1996, the FBI lab established the Combined DNA Indexed System (CODIS), a national database of genetic profiles using the STRs from 13 particular loci. STR sequences at these loci are examined in forensic labs and used as evidence in criminal trials. The data from crime scene samples
Test your knowledge Match the correct functions For each of the enzymes in questions, 1-5, choose an answer (a-e) that most closely describes the functions of the enzymes Question 1 helicase Question 2 DNA polymerase 1 Question 3 ligase Question 4 DNA polymerase 111 Question 5 RNA polymerase Answers (a) removes the RNA primers during replication (b) performs transcription (c) unwinds DNA for DNA replication (d) adds nucleotides during DNA replication (e) forms phosphodiester bonds between Okazaki fragments Question 6 Which of the following are the nucleotides found in RNA (a) A, C, G, T (b) A, C, G, U (c) T, C, G, U (d) A, T, G, U (e) U, C, T, A
Lesson 1.4 Vaccination - Overview Preface In this unit, students have studied diagnostic tests used to identify disease agents and have examined how antibiotics can be used to treat bacterial infections. In Lesson 1.4, students discuss infectious disease prevention, specifically through vaccination. In the aftermath of the bacterial meningitis cases at Sue’s school, all student medical records are reviewed and any student who did not receive the meningitis vaccine is called back in for immediate immunization. Vaccination is a valuable first line of defense against this debilitating infection and could make the difference between a few isolated cases and a full-blown outbreak. In the first activity of the lesson, students study the history of vaccination through the eyes of scientist Edward Jenner.