MON 2/25 week-8 TOPIC: MEIOSIS WRAP-UP OBJ :...

MON 2/25 week-8TOPIC: MEIOSIS WRAP-UP OBJ : 7-10

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EXT: --- DUE DATE: ---

DW: OBJ 7-10

10.1 QUIZ TMRW FEB 26

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EXIT: CIRCLE LEVEL of UNDERSTANDING

[see slide]

HANDOUTS to PICK-UP:

-10.1 APP NTS

TURN IN to ABS box:

-SEMINAR :

-BEFORE SCHOOL/RAVEN-50:

DW- 10.1 WEBQUEST

-10.1 APP NTS / REVIEW

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GENERAL

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10.1 VIDEO LESSON- Ed Puzzle

MON

10.1 WEBQUEST

Write this in

RED PEN

RED X in BOX

PEER #

DW GRADE: 2 1.5 1 0

DW -GRADE RUBRIC

2-WHAT IS EXPECTED-100% COMPLETION with EFFORT

-FRONT SIDE FULLY COMPLETE

1-NOT QUITE WHAT IS EXPECTED-50-99% COMPLETION with EFFORT

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0-NOT WHAT IS EXPECTED- <50% COMPLETED

10.1 WEBQUEST

FILE DAILY

WORK

WEEK IN REVIEW

TURN IN WEEK 7

UNIT OBJECTIVES

10.1 MEIOSIS

7-DESCRIBE / RECOGNIZE the events of each stage of meiosis

8-EXPLAIN the reduction of chromosome number that occurs during meiosis

9-EXPLAIN the importance of meiosis in providing genetic variation

SUMMARY

*10---COMPARE/CONTRAST MITOSIS/MEIOSIS

10.1 APP NTS

COLLABORATIVE GROUP EXPECTATIONSIDENTIFY ROLES [write # TOP RIGHT CORNER]

LAB GROUP(3-5 students)

-working TOGETHER as a collaborative group to COMPLETE TASK

-EVERYTEAM MEMBER has a job and participates EQUALLY

1-READ THROUGH EACH TASK (silently or together)

2-DISCUSS (use POSITIVE communication)

EVIDENCE [highlight supportive evidence]

3-ANSWER [when all members agree]

4-MOVE ON (only when ALL team members understand)

QUESTIONS ?’s

-each other

CLARIFICATION

-Asking Mrs. Paepke for clarification NOT answers.

FYI

-discussion within COLORED group ONLY

10.1 APP NTS

-RED PEN out for REVIEW

MAIN IDEA

-MEIOSIS produces HAPLOID GAMETES

-cell division that REDUCES the # of chromosomes by half through

the separation of homologous chromosomes.

Cell Division and the Cell Cycle

http://www.youtube.com/watch?v=Q6ucKWIIFmg

Meiosis – mouse testes

Parent cell

4 gametes

1st division

2nd division

CHROMOSOMES and CHROMOSOME #

IDENTIFY: three characteristics that are the same in each

member of a pair of homologous chromosomes

SAME DIFFERENT

1- 1-

2-

3-

length

centromere position

position of genes

ALLELE-exact version [code] of each gene

CHROMOSOMES and CHROMOSOME #

DRAW/LABEL homologous chromosomes /sister chromatids

MEIOSIS I / MEIOSIS II

IDENTIFY: the phases of MI and MII

PI T2 INTERPHASE AIP2

TI A2 MI M2


PI

-chromosomes condense/pair up

-spindle fibers form

-homologous chromosomes pair

-crossing over occurs


MI

-spindle fiber attach to centromere

-pull HC pairs to center

-random assortment of HC


AI

-chromosome move apart

-separate homologous pairs


T1

-HC of each pair move to opposite ends


P2




M2

-haploid # of chromosome line up at center


A2

-sister chromatids pulled apart


T2

-cell divides into 4 different haploid cells


COMPARE/CONTRAST: the phases of MI and M2PI



-homologous chromosomes pair

-crossing over occurs

MI

-spindle fiber attach to centromere

-pull HC pairs to center

-random assortment of HC

AI

-chromosome move apart

-separate homologous pairs

T1

-HC of each pair move to opposite ends

P2



M2

-haploid # of chromosome line up

at center

A2

-sister chromatids pulled apart

T2

-cell divides into 4 different haploid

cells


ANALYZE: the chart above to determine the phase when

CROSSING OVER can occur.

Mark a STAR on the correct phase

PROPHASE I

10.1 Meiosis Square Dance.wmv

10.1 Meiosis Square Dance.wmv

SEXUAL v ASEXUAL REPRODUCTION

EXPLAIN how MEIOSIS and FERTILIZATION produce

genetic variation during SEXUAL REPRODUCTION

Prophase1- crossing over

-trade pieces of genetic material [ALLELES]

Metaphase1- independent assortment:

-random sorting of chromosomes lined up at equator

Fertilization -increases genetic variation further by combining

genetic info from 2 different individuals

-only 1 sperm out of 1,000s will fertilize 1 egg

SEXUAL v ASEXUAL REPRODUCTION

COMPARE:

asexual reprod

genes

sexual reprodgenetic diversity

protists animals plants

mammals

EXITCIRCLE-level of understanding of today’s objective

Q’s / clarifications-EXIT- NONE

MON 2/25 week-8 TOPIC: MEIOSIS WRAP-UP OBJ :...

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