Mitosis, Meiosis and Reproduction - South McKeel Academy

kissimmeemisologistΒιοτεχνολογία

14 Δεκ 2012 (πριν από 4 χρόνια και 8 μήνες)

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Vocabulary


Diploid


Cell that has two copies of each
chromosome




Haploid


cell with half of the normal number
of chromosomes.

Mitosis

Meiosis I


Meiosis II

Reproduction through mitosis that
involves only one parent

Asexual production increases an
organism’s chances of reproducing,
but causes the offspring to be
identical to the parent.

New organism has DNA identical to
the parent

Fission


cell splits in half


bacteria

Budding


new organism grows on
side of parent


hydra

Regeneration


re
-
growing lost parts


sea star

Asexual
Reproduction

Asexual Reproduction

Reproduction that
involves 2 parents

In sexual reproduction a
new organism is produce
when sex cells combine.

New organism has DNA
different from either
parent

Humans





Sexual
Reproduction

23

23

46

Sexual Reproduction


Genetic Engineering

and Artificial Selection


Genetic Engineering: Biological and chemical
methods designed to change the arrangement
of a gene’s DNA


Used in the Mass Production of Human Insulin


Artificial Selection: The selective breeding of
an organism by humans in order to obtain
specific characteristics in the offspring.


Used in creating Seedless Grapes

Vocabulary


Cloning: The process of producing an organism
that is genetically identical to the parent by
means of asexual reproduction.


Zygote: A new diploid cell that is formed as a
result of fertilization..


Meiosis: The formation of sex cells (gametes) by
producing four haploid cells from one diploid cell.


Fertilization: In sexual reproduction, the joining of
egg and sperm.