Meiosis Flashcards
(25 cards)
Draw a diagram from prophase 1 -Telophase ll
Draw it out
What happens in Prophase l
Nuclear membrane dissolves
Crossing over occurs
Terrad is formed
What happens in metaphase one?
Tetrads line up at the middle of the cell and attached to the spindle fibres at their centromere‘s 
What happens in anaphase one?
The tetrads separate
The spindle fibres pull them back to their central rods
The cell membrane begins to re-constrict
What happens in telophase one?
Cellmate membrane completely reforms
To diploid cells are produced
The nuclear membrane enclosed is the separated, chromatids
What happens in prophase two
DNA begins to condense and forms short chromosomes
Each chromosome pair has a centromere
Homologous chromatids do not duplicate, but merely separate 
What is homologous?
In other words it means same location
Homologous chromosomes are chromosome pairs (one from each parent) that are similar in length, gene position, and centromere location.
What happens in metaphase two
Chromatids line up in the middle of the cell
Centrioles are at the poles of the cell
What happens in anaphase two
The chromatids separated, and go back to the polls
The cell membrane begins to reform
What happens in telophase two
For haploid cells are produced
Each cell has half of the number of chromosomes of the parent cell
The cell membrane begins to pitch

What is meiosis?
When chromosomes cut in half
What does meiosis occur in
Sexually reproducing organisms
In meiosis, how many chromosomes do they start with an N with?
They begin with a germ cell which contains 46 chromosomes and end with for gametes, which contain 23 chromosomes
What is the meaning of diploid?
When the cells in your body have a complete set of pairs (all 46)
What is the meaning of haploid?
Gametes only have half (23)
What is the difference between diploid and haploid?
Diploid have complete set of pairs of 46 and gametes only have half 23 
How is meiosis different from mitosis?
Meiosis will produce for non-identical, daughter cells that are each haploid
Does meiosis make haploid or diploid cells? 
Haploid
Does the process of meiosis have interphase?
No
How many chromosomes are in the sperm and egg
23 each
What would happen if you didn’t have interphase first
You won’t have any DNA replication
How many chromosomes are inherited from mom and dad?
23 for Mom and 23 from Dad
How would you know if to chromosomes or homologous
They are the same size and carrying the same gene at the same spot on the chromosome
What happens during crossing over in prophase one?
They transfer their genetic information to each other
