Satges Of Sexual Teproduction Flashcards Preview

Scinec Fertilization > Satges Of Sexual Teproduction > Flashcards

Flashcards in Satges Of Sexual Teproduction Deck (19):
1

What are the three stages?

Mating
Fertilization
Development

2

What is mating

Members of opposite gender come together at certain times of the year to reproduce, during the most favourite time of the year for optimal chance for survival of offspring (baby)

3

What is fertilization?

Gametes come together to form a zygote which will form into a embryo
Only one sperm to combine with a ovum (egg)

4

Development

Zygote will divide through mitosi to form a embryo

5

What are the two methods of fertilization?

Internal
External

6

External?

Sperm and egg combine outside of the body: salmon milt/sperm

7

Advantages of external fertilization

Little energy wasted to find a mate,
Late numbers of offspring are produced

8

Disadvantages of external fertilization?

Unprotected eggs, most young will not survive

9

Internal fertilization! What is it

Occurs inside the body

10

Advantages of internal fertilization?

Greater parental care for developing embryo and young

11

Disadvantages of internal fertilization?

More energy used in care
Fewer offspring

12

Embryonic development

Early development

13

Morula

First week of cell division

14

Blastula

Hollow ball is formed after second week, stem cells start to differentiate

15

Gastrula

Forms into three layers

16

What is artificial inseminaton

Collecting sperm and injecting it into a female

17

What is in vitro fertilization? What

Eggs are removed from the ovaries and then mixed with sperm in a container (perry dish) the fertilized egg is hen inserted into the uterus
*test tube baby*

18

What is gamete intrafallopion transfer

Eggs are removed and mixed with sorry, the mixture is injected into the fallopion tube

19

Intracytoplasmic sperm injection

Single sperm injected into the egg