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Flashcards for Biology Chapter 5
Flashcards for BIology Chapter 5 in Mr. Richard's class
40
Biology
10th Grade
10/30/2011

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Term
What are the 2 types of characteristics?
Definition
species and individual
Term
Who is the "Father of Genetics"?
Definition
Gregor Mendel
Term
Who described today's current model of DNA?
Definition
Watson and Crick
Term
What is a diploid cell?
Definition
a cell that has homologous pairs
Term
What is a diploid cell?
Definition
a cell that has homologous pairs
Term
What is a diploid cell?
Definition
a cell that has homologous pairs
Term
What is a homologous pair?
Definition
2 chromosomes that have the same kind of genes in the same order
Term
What is a karyotype?
Definition
a micrograph of chromosomes in a cell (it shows the pairs of chromosomes)
Term
What is a haploid cell?
Definition
a cell that only has one of each chromosome type
Term
What is a gamete?
Definition
haploid cell that unites with another haploid cell to form a zygote; used in sexual reproduction
Term
What are the 3 phases of Interphase?
Definition
G1, S, G2
Term
What happens in G1 phase?
Definition
the cell grows
Term
What happens in the Synthesis (S) phase?
Definition
The cell makes copies of the chromosomes
Term
What happens in G2 phase?
Definition
the cell produces new organelles and molecules for a new cell
Term
After G2 phase, what happens?
Definition
Mitosis
Term
What are the phases of Mitosis?
Definition
Prophase, Metaphase, Anaphase, Telophase
Term
What are the 2 types of gametes?
Definition
sperm and ovum
Term
What happens in prophase?
Definition
the nucleus dissolves, the chromosomes become visible, and the chromosomes are in sister chromatids, and the spindle fibers form
Term
What happens in Metaphase?
Definition
the sister chromatids line up in the middle of the cell with the spindle fibers attached to them
Term
What do centrioles do during mitosis?
Definition
they move to the ends of the cell, form spindle fibers, and separate the sister chromatids
Term
What is Anaphase?
Definition
the phase where the sister chromatids are split and are pulled to opposite ends of the cell
Term
What is Telophase?
Definition
it is where a new nuclues forms around the chromosomes, and the cells start to separate
Term
What is the final step of the cell cycle that is the step where the cells are completely separated called?
Definition
cytokinesis
Term
What is the product of mitosis?
Definition
2 daughter cells that are identical
Term
How can you tell the difference between a plant cell and an animal cell exhibiting mitosis?
Definition
the animal cell will look like it is pinching apart, while a plant cell just forms another cell wall between the two daughter cells
Term
What are the uses of Mitosis?
Definition
to help the organism grow, to repair damaged or "worn out" cells, and to asexually reproduce
Term
Where does mitosis usually occur?
Definition
in singe cell organisms
Term
Illustrate Mitosis.
Definition
[image]
Term
What are the steps to meiosis?
Definition
Interphase(G1), Interphase (synthesis), Interphase G2, Prophase 1, metaphase 1, anaphase 1, telophase1 and 1st cytokinesis, then prophase 2, metaphase 2, anaphase 2, and the 2nd telophase and cytokinesis
Term
What happens in Prophase 1 in meiosis?
Definition
the nucleus breaks down, and sister chromatids are together
Term
What is an allele?
Definition
one of a pair of genes that has the same position on homologous chromosomes, two different genes for the same trait; ex. one gene for blue eyes and 1 gene for brown eyes are alleles
Term
What happens in Metaphase 1 in meiosis?
Definition
the co-ordinating alleles line up next to each other in the middle of the cell
Term
What happpens in anaphase 1 in meiosis?
Definition
the alleles separate and then go through telophase and cytokinesis 1
Term
What happens in prophase 2 in meiosis?
Definition
the sister chromatids form and the nuclues dissolves
Term
What happens during metaphase 2 in meiosis?
Definition
the sister chromatids line up in the middle of the cell
Term
What happens during anaphase 2 in meiosis?
Definition
the sister chromatids separate and move to the poles of the cell
Term
What happens during telophase and cytokinesis 2?
Definition
the cell is divided and forms 2 haploid cells.
Term
What is the product of meiosis?
Definition
4 haploid cells with only one of each chromosome
Term
What is meiosis used for?
Definition
sexual reproduction
Term
Illustrate Meiosis.
Definition
[image]
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