Search found 585 matches

by sdekivit
Sat Jul 28, 2007 9:30 pm
Forum: Genetics
Topic: usage of chi square in a genetics cross -how does this work?
Replies: 9
Views: 6397

Oh - what i was taught to do, was this: (number of phenotypes -1) Since in your case there is a total of 4 phenotpes in the offspring, then the degree of freedom is 4-1 = 3. Is this an acceptable method? no it's not --> the only correct method was mentioned by canalon: df = (columns-1) * (rows-1)
by sdekivit
Sat Jul 28, 2007 9:26 pm
Forum: Molecular Biology
Topic: Virology Question
Replies: 2
Views: 1668

i only know the influenza A / WS33 strain, an H1N1 strain evolved from the pig around 1913
by sdekivit
Thu Jul 26, 2007 8:47 am
Forum: Cell Biology
Topic: nucleus stained
Replies: 5
Views: 3610

you stained the nuclei with DAPI ? well it's much easier to find your cells if your nucleus is stained :lol:
by sdekivit
Wed Jul 25, 2007 8:20 am
Forum: Genetics
Topic: Anyone know much on Hemizygous?
Replies: 10
Views: 13583

females are mosaics :p
by sdekivit
Tue Jul 24, 2007 4:22 pm
Forum: Cell Biology
Topic: How is an organism's genome condensed into chromosomes
Replies: 1
Views: 1384

check a general textbook on cell biology and search for histone proteins
by sdekivit
Tue Jul 24, 2007 9:51 am
Forum: General Discussion
Topic: Research Projects
Replies: 4
Views: 2329

you know that when you don't try, you are certain not getting the research place --> at the end someone with A+'s is not necessarily a better person for doing research then someone with B's. It's not only the grades they are looking at, also your motivation why you want to do research there and so o...
by sdekivit
Mon Jul 23, 2007 11:00 am
Forum: Cell Biology
Topic: I need help. i just dont understand
Replies: 3
Views: 2103

read a general textbook on (regulation of) metabolism.
by sdekivit
Sat Jul 21, 2007 9:10 am
Forum: Cell Biology
Topic: epinephrine
Replies: 3
Views: 5503

thus glucose-6-phosphate will get high in the cell inhibiting hexo/glucokinase and activating the glycolysis pathway --> thus less glucose is imported into the cell. In this way it seems that epinephrine inhibits the fight-flight response. However, during exercise epinephrine stimulates glucose impo...
by sdekivit
Sat Jul 21, 2007 8:59 am
Forum: Cell Biology
Topic: Neurotransmitters
Replies: 4
Views: 2441

try a general textbook on regulation of metabolism. In any case, there is a relationship between glycolysis/gluconeogenesis and (nor)epinephrine.
by sdekivit
Wed Jul 18, 2007 8:01 am
Forum: Molecular Biology
Topic: Difference b/n cdc5 and cdk5
Replies: 3
Views: 2317

the activity of cdkis dependent on the phosphorylation status regulated by kinases and phosphatases.

--> cdk is the group of kinases that stimulates the cell cycle when activated.

--> they are activated by phosphatases like cdc5.
by sdekivit
Wed Jul 18, 2007 7:53 am
Forum: Physiology
Topic: progesterone or cortisol?
Replies: 10
Views: 9794

all steroid hormones are produced from cholesterol --> this will result in progesteron synthesis. Cortisol is a downstream product of progesterone after several enzymatic modifications. it depends on the study question you want to answer: if it's the direct effect of high testosterone level on corti...
by sdekivit
Sun Jul 15, 2007 6:14 am
Forum: Molecular Biology
Topic: RNA extraction Kit vs Trizol
Replies: 7
Views: 7951

well as you heard that the trizol method (which is used very often as far as i know) can also isolate small RNA molecules and the kit doesn't do it as good, I would go for the Trizol method but it depends on what fragment you are interested in. --> in your figures by the way, the RNA bands represent...