compendium 1, unit 4

Reproduction

1.How is a new organism started http://www.mun.ca/

a)Mitosis

b)Meiosis

c)Fertilization

d)Pre- Embryonic/Embryonic development

e)Fetal Development

f)Eggs

g)Sperm

2Fetal Development

a)3rd month

b)4th month

c)5th month

d)6th month

e)7th month

f)8th month

g)9th month

3Human life cycle

a)Meiosis

b)Fertilization

c)Fetal Development

d)Birth

e)Childhood/Adolescence

f)Adulthood

g)Aging

h)Death

1. How is a new organism started.

a)Mitosis- Somatic cell division that produces 2 daughter cells that contain the same number and kind of chromosomes as the original cell.

b)Meiosis- Begins with a diploid stem cell. After 2 divisions, 4 gametes are produced.

c)Fertilization- Union of a sperm and egg to form a zygote. This is the first cell created in order to create a person.

d)Pre-Embryonic- First week of embryonic fetal development

1) Embryonic Development- Begins 2nd week and lasts until the second month of development.

e)Fetal Development- Uterus is growing since the baby is being constructed. This will continue until birth of baby.

f)Eggs- Produced by the ovaries, lives 6-24 hrs unless fertilization occurs.

g)Sperm- Produced in testes, and transported by semen secreted by the prostate and seminal gland during ejaculation

2.Fetal Development

a)3rd month- Gender can be distinguished

b)4th month-Skeleton is visible http://www.search.com/

c)5th month- Heart beat can be heard

d)6th month- Able to differentiate parts of body

e)7th month- Eyes are open

f)8th month- Subcutaneous fat begins to be deposited

g)9th month- Fetus is ready for birth

3. Human life cycle

a)Meiosis

b)Fertilization

c)Fetal development

d)Birth

e)Childhood/Adolescence www.teachercreatedmaterials.com

f)Adult hood

g)Aging

h)Death

Ref: Mader book, ARIS, Brady Book