Terms in this set (62)
in what type of cell does division take place in Meiosis?
Sex cells are also reffered to as....?
in what type of cell does division take place in Mitosis?
What is the purpose of division in MItosis?
Growth and repair
What is the purpose of division in Meiosis?
How many chromosomes fare present at G1 in MItosis??
How many chromosomes fare present at G1 in Meiosis?
How many chromosomes are present at G2 in Mitosis?
How many chromosomes are present at G2 in Meiosis?
How many divisions are there in MItosis?
How many divisions are there in Meiosis?
Review G1 and G2 for chromosomes in meiosis and Mitoisis...
How many daughter cells are produced in MItosis Vs Meiosis?
Mitosis: 2 Meiosis: 4
How many Chormomsomes are in the daughter cells in Mitosis vs Meiosis?
Mitosis: Diploid Meiosis: Haploid
2n=? and n=?
Diploid ; Haploid
Are the daughter cells identical to or different than parent than the parent cell in MItosis Vs Meiosis?
Mitosis: Identical Meiosis: Different
Does crossing over occur? if so during what stage in Meisosis Vs Mitosis?
Mitosis: No Meiosis: yes, Prophase I
During what stage do the sister Chromatids Seperate in Mitois Vs Meiosis?
Mitosis: Anaphase Meiosis: Anaphase II
List the two things that Medels princiles of gentics required in order to be true?
1) each organism must inherit a single copy of every gene from both its parents
2) when an organism produces itw own gametes those two set of genes must be seperated from each other so that each gamete contains just one set of genes
what does it mean when two sets of chromosomes are homologous?
that each of the chromosomes that came from the male parent has a corrosponding chromosome from the female parent
name two ways to describe a diploid cell
2N, and contains two sets of homologous chromosomes
if a Drosophilla cells has a diploid number of 8 how many chromosomes will be in the haploid?
study the drawings of Meiosis
why is meiosis described as a process of reduction division?
because the number of chromomsomes per cell is cut in half through the seperration of homologous chromosomes in a diploid cell
what are the two distinct divisions of Meiosis?
Meisosis I and Meisosis II
T/F? the diploid cell that enters meiosis becomes 4 haploid cells at the end of meiosis?
how does a tetrad form in prophse I of meiosis?
each chromosome pairs with its corrosponding homologous chromosomes and produces new combinations of alles
T/F about Meiosis? during meiosis I homologous chromosmoes seperate
T/F about Meiosis? the two daughter cells produced by meiosis I still have the two complete setes of Chromosomes
T/F about Meiosis? during anaphase II the paired chromadids seperate
T/F about Meiosis? after meiosis the four daughter cells contain the diploid number of chromosomes?
Haploid gametes produced in males?
Haploid Gametes produced in Females?
Cells produced in femalse that do not participate in reproduction?
t/f about meiosis and mitosis? mitosis produces four genetically different haploid cells?
t/f about meiosis and mitosis? meiosis produces two genetically identical diploid cells?
t/f about meiosis and mitosis? Mitosis begins with a diploid cell?
Meiosis begins with a diploid cell?
term used to refer to chromosomes that each have a corrosponding chromosome from the opposite sex parent
refers to a cell that contains both sets of homologous chromosomes
refers to a cell that contains only a single set of chromosomes and therefor only a single set of genes
deff of meiosis is?
proccess by which the number of chromosomes per cell is cut in half through the seperation of the homologous chromosomes in a diploid cell
structure containing four chromatids that form in meiosis
process in which homologous chromosomes exchange portions of their chromatids during meiosis
look over notes
read section 11-4 aloud...
Asexual reproduces by...
cell division (bacteria)
sexual reproduces by...
a cell that contains both sets of homologous is said to be a ...?
the normal chromosome number of each species is kept constant by...?
give a brief discription of prophase I and prophase II?
I: each chromosome pairs with its homologous chromosome (called tetrad), and crossing over begins in the homologous pairs >>>> II: the nuclear envelope disappears and each cell has half the chromosome #
the close contact b/ween chromosome pairs is caled...?
give a brief discription of Metaphase I and Metaphase II?
I: homologous chromosomes line up in the middle of the cell. >>>> II: chromosomes line up at the equator
give a brief discription of of Anaphase I and Anaphase II?
I: Homologous chromosomes are seperated and begin moving to opposite poles >>> II: sister chromatids are seperated and begin to move to the poles
give a brief discription of Telaphse I and Telaphase II?
I: the nuclear envelope forms and cytokinesis takes place resulting in 2 haploid cells >>>> II: the nuclear evelope fors and cytokinesis occurs resulting in four genetically different haploid cells
what are the tow signifigant differences from meiosis and mitoisis with in the stages?
Prophase I and Anaphase I
the main difference b/ween egg and sperm formation occurs during ....?
a male has _ haploid sperm cells and a female has _ Haploid egg cells?
4 ; 1
the cytooplasm divides unequalley during...?
oogenessi results in ...?
one haploid ootid and 3 polar bodies
process in sexual reproduction in which male and female reproductive cells join to form a new cell