Meiosis
*Define Homologous Chromosomes:
Ex: the picture to the right is a pair of Homologous
Chromosomes.
*Diploid: (2n) term to describe a cell that has two factors
(_______) for each trait. One allele is located on each of
the paired ___________.
Ex: one allele in the picture codes for _________ flowers
and one allele codes for __________ flowers.
*Define allele:
*Haploid: (n) describes a cell that has one factor for every ________. It only has one of each type of
chromosome.
A diploid cell would have twice as many chromosomes as a ________ cell.
Define Meiosis:
Mitosis
Fertilization
Meiosis occurs in specialized of the parent’s body.
Meiosis
Define Gamete:
Examples of gametes are ______ and sperm.
In order to ensure that offspring get one chromosome
From each parent…go through process called _________
to form _______.
*Gametes are _______ (n) cells that come
together to MAKE A _______ (2n) cell called a ________.
The Zygote will Develop by ________ into a multicellular organism.
Define sexual reproduction:
The fusion of an egg and sperm is a process called __________.
Telophase I
Meiosis has two nuclear divisions! For this reason there is...
Meiosis I (information for drawning can be found on 267, draw and label each step)
Prophase I
Metaphase I
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HunterAllyson
Wednesday, March 26, 2014 2:42:36 PM ET
Anaphase I
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Meiosis II
Telophase II
Prophase II
Metaphase II
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Anaphase II
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Meiosis Summarized
Meiosis starts with one DIPLOID cell and ends with four ________ cells. The four cells are
called ___________.
*Define Crossing Over:
During which stage does crossing over occur?
When the homologous chromosomes pair up they come together so
tightly that sometimes the tip of one chromosome breaks off and
reattaches to the other.
HunterAllyson
Wednesday, March 26, 2014 2:42:36 PM ET
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