Search found 116 matches

by aptitude
Thu Dec 08, 2011 1:22 am
Forum: Evolution
Topic: Origin of the Nucleus
Replies: 3
Views: 4184

Well, there's still some debate going on. I agree though, it's kind of strange.
by aptitude
Wed Dec 07, 2011 7:24 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1783914

scottie, The 4th dimension, as described by Einstein, is time, not another space dimension. Also, you can not simply say that "X is possible", physical evidence rather than theoretical derivation is required to say that "X must be true" when dealing with subjects as extraneous as...
by aptitude
Wed Dec 07, 2011 7:16 am
Forum: Evolution
Topic: Origin of the Nucleus
Replies: 3
Views: 4184

Raven's Biology briefly mentions that the nucleus may have originated from an archaean. Some archaea have histones and similar DNA-processing enzymes, which supports this hypothesis. I haven't seen too much research on this, though.
by aptitude
Thu Nov 17, 2011 1:39 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1783914

scottie, you have consistently stated that you will not believe something because it is "just a hypothesis". I don't think you realize that the first step of the scientific method is to make a hypothesis. So, according to your judgement, if every hypothesis is not worthy of consideration a...
by aptitude
Thu Nov 17, 2011 1:08 am
Forum: Cell Biology
Topic: Methods of analysis of mtDNA
Replies: 2
Views: 1809

Do you mean genetically, where it is used to determine maternal inheritance?
by aptitude
Wed Nov 16, 2011 1:57 am
Forum: Cell Biology
Topic: Glucose
Replies: 2
Views: 1525

Heat produced from metabolism is mainly used to maintain a constant body temperature.
by aptitude
Fri Nov 11, 2011 5:57 pm
Forum: Genetics
Topic: sex linked dyhybrid cross? how to set up
Replies: 8
Views: 15723

Yes.
by aptitude
Fri Nov 11, 2011 7:31 am
Forum: Genetics
Topic: sex linked dyhybrid cross? how to set up
Replies: 8
Views: 15723

All you have to do is use the laws of probability to determine the ratios by multiplying the individual probabilities together. Some hints: 1. The male must carry the recessive colorblindness and hemophilia allele because he is color-blind and has hemophilia 2. Since the female's father was a hemoph...
by aptitude
Fri Nov 11, 2011 3:10 am
Forum: Evolution
Topic: Basis of theory evolution?
Replies: 8
Views: 4529

Re: Basis of theory evolution?

What I meant (and I think what the original question was getting at) is that the initial formation of the first molecule capable of self-replication has nothing to do with evolution. A misunderstanding only. I agreed fully with your post, which resolved the OP's question, but only wished to add tha...
by aptitude
Wed Nov 09, 2011 5:15 am
Forum: Evolution
Topic: Evolutionists Show of Shutting Down the Debate
Replies: 71
Views: 51690

Population as defined by Wikipedia: "A population is all the organisms that both belong to the same species and live in the same geographical area. The area that is used to define a sexual population is such that inter-breeding is possible between any pair within the area and more probable than...
by aptitude
Wed Nov 09, 2011 2:58 am
Forum: Evolution
Topic: Basis of theory evolution?
Replies: 8
Views: 4529

Hint: look up "abiogenesis" on Wikipedia. That should give you plenty to think about :).
by aptitude
Wed Nov 09, 2011 2:51 am
Forum: Physiology
Topic: Urine formation
Replies: 7
Views: 11639

E is incorrect. The functions of antidiuretic hormone, as the name implies, serve to prevent water loss and dehydration, and therefore ADH will reabsorb sodium from the distal tubule, and water will follow by osmosis. Therefore, in the control of ADH, concentrated urine is produced, not dilute urine.