Unit 4, Day 3 Genetics & Human Development T/W, Jan 22 nd -23 rd (Block, 115 Min)
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Transcript of Unit 4, Day 3 Genetics & Human Development T/W, Jan 22 nd -23 rd (Block, 115 Min)
Unit 4, Day 3Genetics & Human DevelopmentT/W, Jan 22nd-23rd
(Block, 115 Min)
Homework Due Today (0 min) - Stamp
•Reproduction and Human Development YouTube Video Notes & Problems (36.F)
•Egg
Daily Question
•If you could change sex for a week, would you do it? Do you think that it is easier to be male or female? Justify your answer using complete sentences.
Essential Skills and Knowledge• 2.2.A (Mitosis): I can describe each phase of mitosis
and how it is the process by which a cell divides in order to create two identical daughter cells.
• 2.2.B (Cell Specialization): I can describe how cells at different stages of human development specialize to a specific function by expressing only specific genes found within the DNA.
• 2.2.C (Prenatal Stages): I can describe the process by which a fertilized egg (zygote) undergoes cell division to form the blastocyst which becomes the embryo and finally results in the fetus.
Homework CFU- #11. What is the time of the
menstrual cycle in which a female is most likely to get pregnant? Why is she most likely to get pregnant at this stage?
Homework CFU- #2• Describe the pathway (or
absence) of the follicular, ovulation, and the luteal phases if an egg is not fertilized? What if an egg is fertilized?
Homework CFU- #3• What is the difference
between totipotent and pluripotent stem cells?
• Cell Specialization!!!
Homework CFU - #4
•Describe at least 5 differences between Meiosis and Mitosis. (Next Slide)
Meiosis Versus Mitosis
•Use the diagrams to help you•Use your video notes to help you•Work with your partner to fill out the
worksheet•You must know the similarities and
differences between Meiosis and Mitosis
Meiosis Phases•Interphase, G1: Growth, Before Duplication•Interphase, S: Duplication (Sister Chromatids)•Interphase, G2: After Duplication•Prophase I: Nuclear envelope disintegrates,
homologous pairs, crossing over•Metaphase I: Pairs line up at equator•Anaphase I: Chromosome pairs separate•Telophase I: Nuclear envelopes reform, 2 cells
Meiosis Phase Continued
•Prophase II: nuclear envelopes in 2 cells disintegrate
•Metaphase II: chromosomes line up at equator
•Anaphase II: sister chromatids separate•Telophase II: Nuclear envelopes reform, 4
daughter cells made (cytokinesis)
Mitosis Phases
•Interphase G1, S, G2: Same as Meiosis•Prophase: Nuclear envelope disintegrates•Metaphase: all chromosomes align at
equator•Anaphase: sister chromatids separate•Telophase: nuclear envelopes reform, 2
daughter cells made (cytokinesis)
Compare and ContrastMeiosis Mitosis
Parent cell - 2n chromosomes Parent cell - 2n chromosomes
Each daughter cell - n chromosomes
Each daughter cell - 2n chromosomes
Interphase is the same Interphase is the same
4 daughter cells produced 2 daughter cells produced
2 divisions 1 division
Its purpose is to enable organism to reproduce sexually. Gametes (sperm and egg) are haploid.
Its purpose is to allow multicellular organisms to grow and repair damaged tissue.
Hook
•http://www.youtube.com/watch?v=vCfXhJZjcYI
Contest
•On Lecture Activity Page 36.D•List all of the things that you can’t have
during pregnancy in 30 seconds
First Trimester (Months 1-3)Month 1 Month 2 Month 3
Amniotic sac (cushioning water) forms.
Brain and spinal cord well formed.
Baby full formed
Placenta develops - Transfers nutrients.
Digestive and sensory organs develop.
Nails and teeth
Primitive face. Blood circulation begins.
Fingers, toes, and eyes forming
Reproductive organs (cannot distinguish on ultrasound)
6-7 mm (grain of rice) 1 inch 3-4 inches
First Trimester
Second Trimester (Months 4-6)
•Period of growth•18-20 weeks: fetal heartbeat can be heard•Fetus can suck its thumbs and hiccup•Light kicks, hair forms, eyes open•If born, can survive with medical
intervention, but chances are low (body temp, respiratory failure, immune system)
Second Trimester
Third Trimester (Months 7-9)
•Fat accumulates for insulation•New nerve cells in brain are forming
(250,000 cells per minute)•Fetus responds to music and sound of
mother’s voice
Third Trimester
Birth DefectsCause Effect
Alcohol Mental Retardation
Cigarettes Premature, Underweight
Folic Acid Deficiency Brain and Spinal Cord problems
Cocaine Premature, Underweight, Permanent brain damage and behavioral disorders
Methamphetamine Premature birth, extreme irritability
CFU
•Rate 1-10•Mitosis and Meiosis•Embryo and Fetal Development•Reproductive Systems
About Me • Born late, 4 lbs 6 oz
(underweight)• Hinsdale Hospital (near
Chicago)• Adoption (was going to be
aborted)• Difficulty talking (ear
problems)• Rolling to Walking• Teeth• Orange carrots and sweet
potatoes• Hate diapers and clothes• Parents are married• Elementary school math
class, bullying
• Learned about sex early in life
• Doctor’s shot newspaper• Broke ankle in 6th grade• Junior high shy, outcast
table• Track and Field, Cross
Country, Tennis• Piano, trumpet, harmonica• First crush: 3rd grade• First boyfriend: 8th grade• Can’t remember first kiss• Favorite subject: Chemistry• High school memories:
retreats
Work Time Partners• Get with your partner• On Project Activity Page
36.E• Write down your
experiences• Brainstorm your child’s
experiences• Use your own
experiences!!
• Begin to write journal entries▫ 8 sentences
Child’s age/stage A struggle/success child
has A struggle/success you
have A struggle/success your
partner has Hopes and fears Realistic life
circumstances
Homework
•dp.davincischools.org/staff/blarkin•Go to “Biology Homework Spring ‘13”•Go to “Homework Due Th/F 1/24-25”
▫Human Development Take Notes Answer Questions
•Suggestion: 2nd picture per partner, birth and infancy journal entires