Lets imagine that in addition to watson and crick other...

Let's imagine that, in addition to Watson and Crick, other teams of scientists were independently trying to understand the structure of the DNA molecule. Match each team's experimental design to the type of reasoning being employed. [Detailed, careful reading of each team's exact experiments should not be necessary to do the match.] Team #1 decided that the three biologically relevant hypotheses were single-stranded, double-stranded, and triple-stranded. They designed an experiment that allowed them to refute or support each of the three hypotheses. They were able to refute single and triple-strandedness, while supporting the double-stranded hypothesis. Team #2 gathered all the known facts about DNA, constructed scale models of the different components, and tried to put the components together in different ways until they found a solution (double-stranded molecule) consistent with all the known facts. Team #3 hypothesized that DNA was double-stranded. They designed a test that would allow them to falsify double-strandedness if that was not the correct solution. They performed the experiment and double-strandedness was not refuted. Options: 1. Strong inference (deductive special case) 2. Inductive reasoning 3. Deductive reasoning

Transcript

00:01 Hello there.

00:01 I see that you have a question in regards to a short film about the double helix.

00:07 So we'll go over each of them.

00:08 So for the first question, why did it seem reasonable for base pairs to be on the outside of the dna molecules? why do i think that might be the case? well, the reason for that because at the time, they were only focused on the nitrogenous basis.

00:29 So it made sense.

00:30 Sense at the time to put them outside rather than inside because they would have been hidden.

00:37 So it makes sense to put it out so you can see it.

00:41 So another question is, what evidence caused watson and crick to refraise their model? and you can give two specific examples from the film.

00:53 So the few that i can think about is how linus pauling was interested in making calm.

01:02 Making complex molecules that's supposed to be molecules let me fix that complex molecules and showing the symmetry of the molecules which was used to show that the photo of the dna that was sziline franklin took resembled what he was talking about and also the second part is irwin chargoth discovered how there were equal numbers of anine and thineine, and the same for cytosine and guanine.

01:46 So the next one that they show a table of different organisms, the data from cargoth and davidson.

01:58 So all these tissues and looking at the table describe any similarities or differences that you observe.

02:06 And based off of the four statements, determine whether if it's true or false.

02:12 So for the first one, they say in each organisms, there's approximately one adamine for every thineineine.

02:22 Is that true or false? and when they say the term approximately when approximately just means it just means it's used to show something as almost but not completely accurate or exact it's just roughly it's roughly close to being the same that you can say that they're the same and look at the chart you can say they're the same so it's true the second part in each organisms there's approximately there's a the portions of adding plus thine equals those of sighing and guanis is that true or false well if you did your calculation you can see that that's not true especially look at the chart that if we add them that we can see that there's roughly more if you add amine plus thymie it's not gonna fully equal to the amount of cytosine and thymine.

03:34 Because when we think about it, when it comes down to dna, if we add these two, you have to make a perfect, you have to have like 100%.

03:46 So you got to so it has to equal to 100.

03:52 So to have them both being equal, that will disrupt and that will disrupt.

03:59 Disrupt the balance if they both were equal.

04:03 So that's why atene and thineine, there's going to be a little bit more of that and kind of little of cytosine and guanine.

04:15 So for the next question, the next question is in each organism, there's approximately one guanine for every thineineine that is not true because when you look at the amount is guanine.

04:39 Guanine is less than finding.

04:42 So, and then for the last one.

04:45 The last one is in each organism, there's approximately one for one gwanine for every cytosine.

04:55 I mean guany for every cytosine.

04:59 So roughly which means like it's almost or close to but not complete or really like exact...

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