biol133 intro outline

biol133 intro outline - Outline lecture 1 exam 1 and video...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Outline lecture 1 exam 1 and video 1 Outline 1- Introduction to Human Genetics I. GENETICS a. We study genetics to answer such questions as: i. H ow does a single cell give rise to a complex multi-cellular human? ii. How do we pass on our characteristics to our offspring? iii. What is the probability of inheriting particular diseases? iv. How can we apply genetic knowledge to the treatment of diseases? b. Genetics in the news i. Cloning (ex. Dolly the cloned sheep and Raeliens/Clonaid “clone” ii. Forensics (ex. Use of DNA evidence in trials) iii. Agriculture (ex. Specially engineered crops) iv. Health Care v. Genome Projects II. Overview of genetics a. What is genetics? i. Genetics is the study of inherited variations and traits 1. It can explain BOTH why you look a little like mom and a little like dad AND why you don’t look exactly like either or them ii. The basis of genetics came from the study of agriculture III. Important terms a. GENES and ALLELES i. GENES 1. Segments of DNA that are the units of heredity 2. At the molecular level, a gene codes (provides the instruction) for the PRODUCTION OF PROTEINS 3. Located at specific spots on a chromosome ii. ALLELES 1. Varient of a gene 2. DIFFER in the coding of some base pairs iii. 1. Disease caused by a mutated gene a. The gene codes for a component of HEMOGLOBIN 2. An allele of the gene codes for a DEFECTIVE HEMOGLOBIN MOLEC 3. The result is sickle-cell anemia a. This is a disease that is painful & can result in organ failure & anemia i. Because of early red blood cell death b. DNA and RNA i. DNA deoxyribonucleic acid 1. Contains the genetic material that makes up genes 2. Made up of 4 DNA building blocks: A (adenine) T(thymine) C(cytosine) G(guanine)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Outline lecture 1 exam 1 and video 2 a. Adenine (A) ONLY pairs with Thymine (T) b. Cytosine (C) ONLY pairs with Guanine (G) ii. RNA ribonucleic acid 1. Acts as the intermediary btw genes and proteins 2. Made up of 4 RNA building blocks: A (adenine) U (uracil) C(cytosine) G(guanine) a. Adenine (A) ONLY pairs with Uracil (U) b. Cytosine (C) ONLY pairs with Guanine (G) iii. DNA contains the instructions for the production of genetic material iv. RNA carries out these instructions c. CHROMOSOMES i. LONG STRANDS of DNA and associated proteins. ii. Our DNA is arranged into & contain our genes iii. Each chromosome contains many genes. iv.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

biol133 intro outline - Outline lecture 1 exam 1 and video...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online