Biology Discussion Notes Thursday 01/08/2015. Goals for the day 1.Be able to say the names of...
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Transcript of Biology Discussion Notes Thursday 01/08/2015. Goals for the day 1.Be able to say the names of...
Biology Discussion Notes
Thursday 01/08/2015
Goals for the day1. Be able to say the names of everyone in our
class2. Be able to define what haploid & diploid mean
and know the numbers for humans
3. Be able to calculate haploid number given diploid number & vice versa
4. Know the haploid & diploid number for HUMANS
Question of the Day THUR 1/08
What is the goal of Meiosis?
(You may use your reading sheet)
Meiosis is a process that reduces the amount of chromosomes in a cell to half
the original amount
Why would you want to reduce chromosomes by half?
Where do you get your chromosomes (DNA) from?
Human Egg and Sperm cells have
23 chromosomes in them.
How many chromosomes are in
human egg and sperm cells?
Haploid – a half set of chromosomes (only found in sex cells)
Diploid – a full set of chromosomes (found in all body cells, except sex
cells- Body Cells AKA somatic cells)
Gamete
Skin Cell
Egg
Somatic Cell
Sperm
Sex Cell
Haploid or Diploid?
How many chromosomes do humans have in their cells?
How many chromosomes would be in a human diploid cell?
How many chromosomes would be in a human haploid cell?
If a Dragon’s wing cell has 50 chromosomes in
it then... 2n=_______
n=______
NAME GAME• First Round: Say your own name
when you get the ball – must throw it to someone who has not had it yet.
• Second Round: Say the name of the person you are throwing it to, if you don’t know a name, you should……
Reading guide
• Work on Reading guide
Species of the Day 1/8• Rough-legged Hawk
– Buteo lagopus
Species of the Day 1/8
Species of the Day 1/8• Rough-legged Hawk
– Buteo lagopus
If the egg cell of this hawk had 30 chromosomes, how many chromosomes would you find in its SOMATIC cells?