Presentation on theme: "Mitosis, Meiosis, Mi Head Hurts."— Presentation transcript:
1 Mitosis, Meiosis, Mi Head Hurts. Biology, Day 29
2 Note Taking TipsDon’t write down everything that you read or hear. Be alert and attentive to the main points. Concentrate on the "meat" of the subject and forget the trimmings.
3 Note Taking TipsNotes should consist of key words, or very short sentences. As a speaker gets side- tracked you can go back and add further information.
4 Note Taking TipsTake accurate notes. You should usually use your own words, but try not to change the meaning. If you quote directly from the author, quote correctly.
5 Note Taking TipsThink a minute about your material before you start making notes. Don’t take notes just to be taking notes! Take notes that will be of real value to you when you look over them later.
6 Note Taking TipsHave a uniform system of punctuation and abbreviation that will make sense to you. Use a skeleton outline, and show importance by indenting. Leave lots of white space for later additions.
7 Note Taking TipsOmit descriptions and full explanations. Keep your notes short and to the point. Condense your material so you can grasp it rapidly.
8 Note Taking TipsDon’t worry about missing a point. Leave space and try to pick up the material you miss at a later date, either through reading, questioning, or common sense.
9 Note Taking TipsDon’t keep notes on oddly shaped pieces of paper. Keep notes in order and in one place.
10 Note Taking TipsShortly after making your notes, go back and rework (not recopy!) your notes by adding extra points, spelling out unclear items, etc.. Remember, we forget quickly. Budget time for this vital step just as you do for the class itself.
11 Note Taking TipsReview your notes periodically. This is the only way to achieve lasting memory.
12 Note Taking TipsUse symbols to call attention to important words: underline, CAPS, circle, box, *, !, ?
13 Note Taking TipsDon’t erase a mistake and don’t black it out completely. Draw a single line through it. This saves time and you may discover later that you want the mistake.
14 &andNo. or #number=equal to, is the same asb/4beforeref.referencew/with>greater than<less thani.e.,that isvs.versus, as opposed toe.g.,for exampleetc.et ceteraQ.questionb/cbecausew/owithout
15 Meiosis (and Fertilization) Slower Requires more energy ReproductionSexualMeiosis (and Fertilization)SlowerRequires more energyResults in genetic diversityRequires a mateAsexualMitosisNo need for a mateNo diversityLess chance of errorsVery fast
16 Meiosis (and Fertilization) Slower Requires more energy ReproductionSexualMeiosis (and Fertilization)SlowerRequires more energyResults in genetic diversityRequires a mateAsexualMitosisNo need for a mateNo diversityLess chance of errorsVery fast
17 Haploids and DiploidsMost new cells are created by mitosis, which creates exact copies of existing cells. These are diploid, or somatic cells.But we know that.Today we’re going to talk about that other kind of cell.
18 Haploids and DiploidsHaploid cells are unique. They only have half as much genetic information as diploids.They make up only reproductive cells, called sperm and egg cells.They are created by a process called meiosis.
19 Haploids and DiploidsMeiosis is a process of reduction division in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
20 Meiosis makes sex cells. Haploids and DiploidsEasier version:Meiosis makes sex cells.
21 MeiosisMeiosis has many stages, which sometimes look very similar to mitosis.There are some important differences in the process and the main result.Hang on, we’re going in.