Transcript 4/20 & 4/21 - 7th Grade Agenda

12/8- 7th Grade Agenda
Learning Objective: Learn about Genetics
Collect HW: Reading & Notetaking p.189-190
Classwork: Chap 10 Study Guide
Textbook Reading p.392 - 397
HW: Reading & Notetaking p.191
Reminder HW: Science Fair Background due 1/13 &
1/14 (10 Points)
Reminder HW: Bring a flower due 12/9 & 12/10 (5
Points)
Reminder: Chapter 10 Test on 12/11 &12/12
Reflection
• Prompt: Why are there more Angiosperms
than Gymnosperms?
Reminder Homework for 12/9 &
12/10
 HW: Bring a large flower in a
plastic bag w/ your name on it.
that we will observe in class:
 Best to bring a Lilly
 Next best is to bring a large
flower where you can see the
pistil and stamen.
 You can go to a florist and ask
them of any old flower that
they are going to throw away
 5 Points
What is Genetics?
• Passing of traits from parents to offspring
is called Heredity
• Scientific Study of Heredity is called
Genetics
Gregor Mendel 1822-1884
• Austrian Priest
• First to study
netics
ge_____
ea plants
• He grew p____
to study genetics
Mendel’s Experiment
• What would happen if
you cross pollinate a
tall plant with short
plant?
• Why?
What is a allele?
• One part of a gene pair. Alleles represent
different varieties of one trait such as
height of pea plant.
• Two alleles form a gene pair
What is a Dominant Allele?
• One whose trait always shows up in the
organism when the allele is present
• Dominant allele is represented by a
CAPITAL letter
What is a Recessive Allele?
• A recessive allele is always covered up or
masked whenever the dominant allele is
present
• Recessive allele is represented by a
lowercase letter
Phenotype
Genotype
TT X tt
Tt X Tt
TT Tt Tt tt
What are Genotype &
Phenotype?
• Phenotype: Physical
appearance
• Genotype: Genetic
makeup
Reminder Homework for 12/12 &
12/13
 HW: Bring a large flower in a
plastic bag w/ your name on it.
that we will observe in class:
 Best to bring a Lilly
 Next best is to bring a large
flower where you can see the
pistil and stamen.
 You can go to a florist and ask
them of any old flower that
they are going to throw away
 5 Points