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Genetics
N/A
18
Science
8th Grade
03/20/2011

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Cards

Term
Define Meiosis
Definition
the process of creating gametes
Term
Define Gamete
Definition
the sex ells in men and women that are created though meiosis
Term
Male sex cells are called __________
Definition
Sperm
Term
Female sex cells are called ________
Definition
eggs
Term
When the chromosomes of the male and female sex cells combine together, __________ occurs
Definition
fertilization
Term
Explain why gametes only have 23 chromosome
Definition
you get 23 chromosomes from each gamete which equals 46, which equals a full cell
Term
The father of modern day genetics is ___________
Definition
Gregor Mendal
Term
He experimented with ___________, and observed there _______ or characteristics over many generations.
Definition
pea plants, traits
Term
Explain the difference between a dominant and reccesive trait
Definition
dominant genes show up over the recessive gene, and recessive genes only shows up when theres another reccesive gene.
Term
Describe three differences between meiosis and mitosis
Definition

1) mitosis makes body cells, meiosis makes gametes

2) meiosis makes 4 cells, mitosis makes 2 total calles

3) after mitosis, there is 46 total chromosomes in the body cell, and after meiosis, there is a total of 23 chromosomes in each gamete

Term
Explain why a women with skin cancer cannot pass it onto her offspring.
Definition
it is a aquired trait, so it cannot be passed down from generation to generation, can be cause by enviormental factors and only happens in the body cells.
Term
Maps of a family genetics history are called a __________ __________
Definition
Pedigree Chart
Term
to be consider male, your chromosomes are ____
Definition
XY
Term
to be considered female, your chromosomes are ____
Definition
XX
Term
In the first cell devision there are ___ chromosomes
Definition
46
Term
In the second cell division, there are _____ chromosomes in each cell
Definition
23
Term
What do the letters outside the punnett square stand for?
Definition
the genotypes of the parents
Term
what do the letters inside the boxes stand for?
Definition
the possible genotypes of there children
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