This is the daily classroom agenda for Paxton Center School Grade 7 Science. Lesson plans, homework, and other relevant information will be posted here each class.
Expand your flashcard deck from 14 cards to 18 cards. Add/include:
Incomplete dominance
Codominance
Multiple Alleles
Polygenic Inheritance
Term on front/definition on back
Add Color illustration for (more) extra credit
Due Monday
Students to take notes/annotate Complex Patterns of Inheritance Reading companion
Study for Quiz
Review Sexual vs Asexual Reproduction Quiz Study Guide
Challenge Worksheets
Quiz Responses.
Complex patterns of inheritance
Format: MC/Word Bank
All students required to make flash cards for Tuesday
10 minutes nightly study is assigned
vocabulary quiz - Friday
legible
Word/term on front side
Definition on reverse side
Checked for completion Tuesday or next class meeting (graded for HW points).
Bonus credit if you include relevant examples, color pictures, etc. on definition side.
You are required to have your flashcards with you every day this week.
Four claws is dominant, three claws is recessive.
Thin mouth is dominant, wide mouth is recessive.
correct letter?
dominant allele
recessive allele
heterozygous, phenotype
homozygous recessive, phenotype
homozygous dominant, phenotype?
Review
Use this Chapter reading pages 277 to 279
Lesson Outline - Part D
Collect Ratio Worksheet?
Pass out handout
review procedure
student data collection
Review results and complete the activity.
Complete Lesson Outline - Part D
6:15-8:30
Gr 3+4 B-ball
Mendel worked with true-breeding plants
When these self-pollinate, they may offspring that match the parent
He cross pollinated true-breeding purple with true-breeding white.
The offspring are hybrids.
Offspring produced from parents with two different forms of a trait.
They were all purple.
But, they were different from the parents.
They had information from both a purple plant and a white.
What would this cause?
Mendel crossed the purple hybrids
The white flowers re-appeared in the offspring about 1/4 of the time.
This result was consistent every time he crossed hybrids.
It worked with other traits the peas had as well.
Mendel experimented with seven different traits.
Whenever he crossed hybrids, one form of each trait appeared about 3x more often than its other form.
He labeled these traits “dominant” and “recessive.” How did he decide which was which?
What human traits seem to behave this way?
Complete LO Part C together for results
Ss finish LO for conclusions
Complete Lesson Outline - parts A and B only
Pass back Papers and review.
Release OR and review.
Whole class quiz Review on BP.
Release results
Watch as class
Around the world - complete quiz
Class review
Complete Lesson Outline - parts A and B only
Mitosis
Process used by eukaryotic cells to make copies of themselves
used for growth and repair of injury
also a form of asexual reproduction for single cell eukaryotic organisms (amoebas and other protists)
Chromosomes copy during interphase
PMAT
Prophase - chrmosomes appear and nucleus dissolves
metaphase - chromosomes line up
anaphase - spindle fibers seperate chromosoes to opposite sides of cell
telophase - two new nuclei form
Cell divides in cytokinesis.
Produces Diploid cells - cells with full sets (pairs) of chromosomes
Meiosis
Process used to make sex cells
supports sexual reproduction
used by most eukaryotes (but not protists)
similar to mitosis but PMAT happens twice
produces halpoid cells - cells with half the correct number of chromosomes.
Sexual reproduction
Fertilization - sperm and egg combine
Zygote - a fertilized egg
used by animals, all flowering plants, many fungi, others
Chromosomes
Structure made of DNA wound up on proteins
contains genes that control an organisms traits
humans have 23 pairs - 46 total
half from each parent
Key Vocabulary
fertilization - the joining of two sex cells (egg and sperm)
zygote - a fertilized egg
sex cell / haploid cell - cells with half of the normal number of chromosomes,
used for sexual reproduction
sperm - male sex cell
egg - female sex cell
also called gametes
body cell / diploid cell - cells with full sets (pairs) of chromosomes
mitosis - a process that divides the nucleus and produces two daughter cells identical to the parent.
meiosis - a process that divides the nucleus twice and produces four sex cells with half the normal number of chromosomes.
sexual reproduction - reproductions where two individuals each combine 1/2 of the chromosomes to make a unique offspring
chromosome - a structure made of DNA wrapped around proteins
gene - sections of the DNA in a chromosome that control a trait (such as eye color)
Quiz Monday
Mitosis makes (body/sex) cells.
These cells are (haploid/diploid).
The cells have (single/pairs) of chromosomes.
Mitosis occurs in (prokaryotic/eukaryotic) organisms.
Daughter cells produced by mitosis are (different/identical) to the parent cell.
Mitosis is used by most organisms for the dual purposes of:
due tomorrow
Due Wednesday
This assignment is (much) too long to complete during a single homeroom study block.
Around the World
Use color
reference this picture
Extra Time? Try this Mitosis identification Practice worksheet.
activity tomorrow
