THE MYRIAD WAYS TO MAKE MORE OF YOURSELF

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Presentation transcript:

THE MYRIAD WAYS TO MAKE MORE OF YOURSELF THE VARIOUS WAYS TO REPRODUCE

ASEXUAL Makes an exact genetic copy Don’t need a partner NO VARIATION NO RECOMBINATION of genes Cells divide by mitosis

MITOSIS A way to make an exact copy of a cell NO CHANGES in DNA (usually) Results in two daughter cells

Budding

Vegetative Propagation

Genus Kalanchoe

Strawberry Runners

Binary Fission

Newt and Axolotyl

Linckia laevigata

Parthenogenesis

Whiptail Lizard

Lycoperdon perlatum

SEXUAL NOT an exact copy Need a partner MUCH variation RECOMBINATION of genes Sex cells (gametes) are made by meiosis

MEIOSIS Divide the chromosome number in half FOUR daughter cells Makes sperm or eggs Produces gametes RECOMBINES GENES!!!!!!

4 chromosomes 2 Chromosomes

External Fertilization

Carassius auratus

Frog

Internal Fertilization

Drosophila melanogaster

Mus musculus

2. Fertilization (optional) 3. development 4. parental care (optional) The “Four” Steps of Reproduction 1. courtship (optional) 2. Fertilization (optional) 3. development 4. parental care (optional)