1/13 & 1/ th Grade Agenda Collect HW: Reading & Notetaking Science Fair Background Presentations Mutations and Hybrid Animal Video: Bill Nye Genes HW: Genetic Activities Worksheet Reminder Procedure, Data Table, Graph & Results due 2/9 & 2/10 (15 Points)
Reflection Prompt: What is the difference Mitosis and Meiosis
Lunch with a Scientist: Friday Room 235 Write 10 facts & get 3 extra credit points.
Science Fair Background Presentations (10 Points) Prompt: What 3 interesting facts you learned during the Science Fair Background presentations.
Meiosis Meiosis is the process by which the number of chromosomes is reduced by h____ to form sex cells – spe___ and eggs. alf rm
Meiosis Meiosis I Meiosis II
Protein Synthesis Cells use information from a gene on a chrom_________ to produce a specific protein. osome
RNA Before protein synthesis can take place a “messe____” carry the genetic code from the DNA inside the nucleus into the cytoplasm. This genetic messenger is called ribonucleic acid or RNA nger
RNA
DNA vs RNA Master Copy Two Strands Never leave nucleus Copy One Strand Leaves the nucleus DNA RNA
Step 1 in Protein Synthesis Messenger RNA Production
Step 2 in Protein Synthesis Messenger RNA attaches to a Ribosome
Step 3 in Protein Synthesis Transfer RNA attaches to a Messenger RNA
Step 4 in Protein Synthesis Protein Grows
Mutation
Mutation means “cha_____” in Latin Mutation can cause a cell to produce an incorrect pro____ during protein synthesis. As a result, the organism’s trait, or pheno____, may be different from what it normally would have been. nge tein type
Hybrid Animals Horse Donkey Mule All male and most female mules are infertile More intelligent than a donkey More endurance than a horse Requires less food than a horse
Ligers = Male Lion + Female Tiger
More Ligers
Tigon = Male Tiger + Female Lion
Zorse = Male Zebra + Female Horse
Wholphin = Dolphin + False Killer Whale Wholphin False Killer Whale Dolphin
Wolfdog = Wolf + dog
House Cat + African Cat African Cat
Tangelo = Tangerine + Grape Fruit