reproduction
sexual reproduction
The genetic material from two different cells produce an offspring
Fertilization
The joining of an egg cell with a sperm cell
Internal Fertilization
Fertilization that occurs inside the body of an animal
External Fertilization
fertilization that occurs outside of the body
Mitosis
Cellular division
The majority of animals reproduce...
sexually
Genetic material is also known as?
DNA
A large majority of animals use
internal fertilization
A female frog will lay eggs
under water
Two daughter cells are created
from one parent cell
If they do not reproduce sexually, they reproduce
asexually
Half of the DNA comes from
Half of the DNA comes from
Earthworms, Spiders, Insects, Reptiles, Birds, Mammals
A male frog will release
sperm cells above them, leading to fertilization
Each daughter cell gets
DNA from parent cell
2 cells that contribute to this is
sperm cell, egg cell
other half comes from
sperm cell
benefits of internal fertilization
Ensures that an embryo (developing offspring) is protected and nourished until it leaves the body
Animals that reproduce using external fertilization
jellyfish, clams and many more
Occurs constantly throughout
lifespan
asexually does not require
sperm and egg cells
Zygote
The new cell that is formed after an egg cell is fertilized
Increases the chance that it will
survive
most animals that use external ferritization
under water animals
A developing embryo needs two things
Nourishment, Protection