Search found 638 matches

by Cat
Sun Dec 01, 2013 8:02 pm
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 7
Views: 22607

You have a problem. Most of the tests you preformed were designed to ID gram negative bacteria. In your earlier post you said that you got beta hemolysis, so you can say that it's "beta hemolytic streptococci" or you can do additional tests to determine which one. See flow charts:

http://loudoun.nvcc.edu/vetonline/vet13 ... cocci2.gif
http://img.docstoccdn.com/thumb/orig/9217067.png
by Cat
Fri Nov 29, 2013 5:17 pm
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 7
Views: 22607

"GRAM NEGATIVE- clustered in chains, splotches, and red/pink. Blue Vegetative cells." - Rods or Cocci??? "THIOGLYCOLLATE MEDIUM- Anaerobic" -Which anaerobe? (m) "SEMI SOLID (Sloppy) Agar – Anaerobic" - This media is usually used to test motility. "ANTIBIOTIC SENSIT...
by Cat
Tue Oct 15, 2013 12:41 am
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 30
Views: 72755

Re: Gender divison in two opposites is greatest mistake of manki

men don't have menopause women have it , whats natures plan behind it? We are supposed to be dead by that time. Thus, menopause is a redundant pathway to assure integrity of genetic information and viability of the offspring: prevent late reproduction = lower chance of passing on damaged DNA and/or...
by Cat
Tue Oct 15, 2013 12:23 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1786078

Re: Theories - Origin of Life

FYI - I am one biologist that disagrees… Most mutations are neutral. It depends on whether you're talking about mutations to the genotype or mutations to the phenotype. Genotype. Change in phenotype is the result of the mutation. There can be no "mutations to the phenotype" by definition...
by Cat
Tue Oct 15, 2013 12:18 am
Forum: Evolution
Topic: Beneficial mutations vs harmful
Replies: 12
Views: 29326

Re:

JackBean wrote:1) nowadays are the organisms (and proteins and their sequences) rather optimized for what they do. However it was not always like that. So in the beginning bigger proportion of the mutations could be beneficial.


Human hubris. No evidence to support those statements...
by Cat
Tue Oct 15, 2013 12:00 am
Forum: Evolution
Topic: Speciation challenges the meaning of "beneficial mutation"
Replies: 3
Views: 11790

Re: Speciation challenges the meaning of "beneficial mutation"

wildfunguy wrote: There isn't yet an agreed upon definition of species. That is just the definition of species according to the biological species concept.


I agree. However, the stress in the definition should be on 'fertile' offspring instead of 'viable' offspring that you discuss in your original post...
by Cat
Sat Oct 05, 2013 1:47 pm
Forum: Evolution
Topic: Speciation challenges the meaning of "beneficial mutation"
Replies: 3
Views: 11790

Re: Speciation challenges the meaning of "beneficial mutation"

Are there any problems with the concepts I have put forth? Yes. It's not "unable to produce viable hybrids", but rather "reproductively isolated". Meaning that their hybrid offspring is sterile (like mule); or that they are geographically isolated and, therefore, cannot breed in...
by Cat
Sat Oct 05, 2013 1:27 pm
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 23671

Re: Re:

From the molecular/genetic standpoint universal ancestor should have had more gene rich genome. I would criticize your position, but frankly, I'm amazed you read through the entire OP. If I was going to read something of that length, I would read a Nature article. It seems that you read it too...
by Cat
Sat Oct 05, 2013 1:11 pm
Forum: Genetics
Topic: I need help with Punnett Square
Replies: 1
Views: 7122

Re: I need help with Punnett Square

The fly been double homozygous the wild type most likely would have had a ratio of around 3:1 for the offspring. No. All of the offspring would have been wild type. The rest of your answer is correct. F0: cross female (Female: BW) x (Male: E) = female bbEE x male BBee F1: All offspring: wild type =...
by Cat
Sat Sep 28, 2013 6:09 pm
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 23671

It is much easier to learn than to unlearn something... From the molecular/genetic standpoint universal ancestor should have had more gene rich genome. However, as I said before, we as species have a superiority complex. We are used to thinking of cave men as our ancestors. Should you find evidence ...
by Cat
Sun Sep 22, 2013 3:37 pm
Forum: Genetics
Topic: hybridization probe
Replies: 2
Views: 3464

JackBean is right, it mostly depends on your machine. However, you need to make sure that fluorophore spectra do not overlap much. You can use this link to help you with that:

http://www.lifetechnologies.com/us/en/h ... iewer.html

You can try this pair - Fluorescein (FITC)/ROX (carboxy-X-rhodamine).
by Cat
Sun Sep 22, 2013 3:19 pm
Forum: Cell Biology
Topic: Cell culture
Replies: 1
Views: 2205

Check with other labs. One of them should have the incubator.