Download presentation
Presentation is loading. Please wait.
Published byAshlynn Reed Modified over 9 years ago
1
Lab Biology- Chapter 9 Honors Biology- Chapter 12 http://www.youtube.com/watch?v=XLCqFo03Qpo&feature=related
2
Modified genome of an organism Takes DNA from multiple sources and combine them to form a new genome DNA from same species DNA from different species- Transgenic organisms
3
Insertion of genes to produce a precursor of vitamin A (beta- carotene) Helps areas where there is a shortage of dietary vitamin A Golden riceWhite rice
4
Unexpected allergies Introduction of new genes to a population Creation of invasive species
5
Gene expression- activation of a gene that results in the formation of a protein Chromosome coiling Euchromatin- uncoiled form Heterochromatin- condensed form
6
Transcription factors Proteins that regulate transcription Enhancer- noncoding sequence that helps activate transcription
7
Study of how traits are passed from parent to offspring Gene- unit of heredity found of a DNA molecule Encodes for a trait
9
Allele- symbols (letters) used to represent genes Potential alternate forms Ex. T=tall, t= short
10
Trait expressed Capital letter T=tall, B= purple Masks another trait Trait that may not be expressed Lowercase letter t= short, b=white Only expressed when there is no dominant trait present
11
Both alleles are the same Examples: TT tt bb CC Alleles differ Examples: Tt Bb Cc
12
Genetic make up Examples: homozygous, heterozygous, GG, Bb, Qq Physical appearance Examples: Tall, short, blue, wrinkled
13
Symbolic of reproduction _________x ___________ P Generation= Parental generation F 1 = first generation F 2 = second generation
14
Diagram used to predict the phenotype and genotype of offspring http://www.changbioscience.com/genetics/punnett.html http://www.mhhe.com/biosci/gen bio/virtual_labs/BL_05/BL_05.ht ml Does not work on iPads
15
Genetic recombination Scrambling of genes Occurs in meiosis during prophase 1 Can alter probability of genotype and phenotype ratios
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.