Unit 4, Day 4Genetics & Human DevelopmentThu, Jan 24th (Block, 115 min)Fri, Jan 25th (Block, 85 min)

Homework Due Today (0 min) - Stamp•Human Development YouTube Video

Notes & Problems (Page 37.F)•Egg

Daily Question•Page 37.A

•If you were to die today, what would be your epitaph? (the phrase on your tombstone) Why would you want that to be your epitaph?

Homework CFUPage 37.F

1. Stages for pregnancy? Dilation, Expulsion, Placental Stage?

2. Ages for each stage of life?

3. Puberty symptoms for boys and girls? Ages?

Essential Skills and Knowledge• Page 37.A

• 2.2.D (Juvenile Stages): I can describe the different developmental characteristics of a human being throughout various stages of their growth including the human neonate, infant, toddler, preschooler, elementary, junior high, and high school.

• 2.2.E (Adulthood): I can describe the different developmental characteristics of a human being throughout various stages of adulthood.

Transition and Warning•Genetic disorders resulting from mistakes

in meiosis

Hook• http://

www.youtube.com/watch?v=VMnY5578YQ0

•An employee with down syndrome insulted by customers. What Would You Do?

Investigation Before Explanation• http://www.youtube.com/watch?v=EA0qxhR2oOk

• # chromosomes in a gamete with zero copies of a chromosome?▫If fertilized with a normal gamete, how many total

chromosomes would the zygote have?

• # chromosomes in a gamete with two copies of a chromosome?▫If fertilized with a normal gamete, how many total

chromosomes would the zygote have?

Teacher Notes (Page 37.C)•Nondisjunction: Failure of chromosomes

to separate normally during meiosis•In general, risks increase with mom’s age

Student Practice (Page 37.C)•If nondisjunction occurs to the

homologous pairs, how many total chromosomes end up in each of the four gametes?

•If nondisjunction occurs to the sister chromatids, how many total chromosomes end up in each of the four gametes?

Teacher Notes (Page 37.C)• Monosomy: Loss of a

chromosome (2n-1)

• Only survivable monosomy: Turner Syndrome

▫ Only one X chrom. (girls)

▫ Short, swelling, broad chest, low-set ears, webbed necks

▫ Non-working ovaries

▫ Difficulties in mathematics and memory

Student Practice (Page 37.C)•A human being with monosomy has __

chromosomes.

Teacher Notes (Page 37.C)•Trisomy: Addition of a chromosome

(2n+1)

Trisomy 21 – Down Syndrome• Most common trisomy

• Delay in learning

• Small chin, face is flat & broad, short neck

Teacher Notes (Page 37.C)

Trisomy 18 – Edwards Syndrome• 2nd most common trisomy

• 80% female

• Majority die before birth

• Low survival rate▫ heart abnormalities, kidney

malformations, etc.

• Symptoms: small head , malformed ears, widely spaced eyes, clenched hands

Teacher Notes (Page 37.C)

Trisomy 13 – Patau Syndrome• >80% die in 1st year

• Severe heart and kidney defects

• Mental retardation, eye defects, extra fingers, low-set ears, deformed feed

Teacher Notes (Page 37.C)

Student Practice (Page 37.C)•A human being with trisomy has __

chromosomes.

CFU•Rate 1-10

▫Human Development▫Genetic Disorders Resulting from Mistakes

in Meiosis

Lecture Activity•Partner 1 draw nondisjunction if it occurs

to the homologous pairs

•Partner 2 draw nondisjunction if it occurs to the sister chromatids

▫Prophase I Metaphase I Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II

Project Activity• Homework due on Monday/Tuesday

▫Rough drafts of 4 journal entries Pregnancy, birth, infancy, toddler, elementary, junior high,

high school, college

• Go over journal entry specifications

• Work on these four journal entries

• Announcement: I am taking out the budget portion of the project and the choosing of life events out of a bag

Homework• Homework due on Monday/Tuesday

▫Rough drafts of 4 journal entries Pregnancy, birth, infancy, toddler, elementary, junior

high, high school, college

• Unit 4 Exam: Friday, February 1st

• Project Due Date: February 4th (odd periods), February 5th (even period)▫Digital Scrapbook (Journal Entries and Photos)▫PSA and Pamphlet (will work on these next week)