Biology acronyms

[psyxwar]

If you have any bio acronyms post them here!

VSSI for answering evolutionary questions -> Variation/Struggle for Survival/Survival of the fittest/Inheritence

BADFEW for evidence for evolution -> Biological (DNA similarities, proteins etc)/Anatomical (homology, vestigial structures)/ Distribution (aka biogeography)/ Fossil record/ Embryology/ Witnesses (ie. humans have actually seen evolution in action)

[alondouek]

In differentiating between microevolution and macroevolution:

Micro: VSSR - Variation within a species, Selecting factor/agent, Survival of the fittest, Reproduction.

Macro: VISSR - Variation within a species, Isolating barrier, Selecting factor/agent, Survival of the fittest, Reproduction.

The first S in mine is a little more specific than yours, as it explicitly mentions the application of a selecting factor

[psyxwar]

Thanks!

So isolating barrier would be something like a mountain separating two populations, or polyploidy in some individuals preventing interbreeding?

[alondouek]

Thanks!

So isolating barrier would be something like a mountain separating two populations, or polyploidy in some individuals preventing interbreeding?

No worries!

First one is correct, the second one almost so. The isolating barrier need not be geographical, it can also be behavioural in that two groups will not mate with each other - this doesn't need to have an explicit genetic basis (by "polyploidy", did you mean "polymorphism"? If so, the statement is correct).

[psyxwar]

No worries!

First one is correct, the second one almost so. The isolating barrier need not be geographical, it can also be behavioural in that two groups will not mate with each other - this doesn't need to have an explicit genetic basis (by "polyploidy", did you mean "polymorphism"? If so, the statement is correct).

As in, plants that are tetraploid (4n) can't successfully fertilise plants that are diploid (2n).

What is polymorphism exactly/ how is it relevant? Heard the term before, but not too sure what it refers to exactly.

[alondouek]

Ah, I see. In this case, the different ploidys are not true isolating barriers. I'd be more inclined to label it as a form of speciation or microevolution.

Polymorphism is literally "many forms" - think black skin colour and white skin colour, or sexual dimorphism where the male of a species differs significantly to the female of that same species.

In the context of your question: If a population of, for example, green beetles splits into two colonies and one colony develops a red colour over time due to a selecting factor, these colonies may not mate even if they can technically produce fertile offspring. This is a form of behavioural isolation resulting from polymorphism.

[psyxwar]

I see. Thanks again.

[Yacoubb]

AGnes is a big PURe girl.

Adenine & Guanine are Purines (double ringed nitrogenous bases).

CUT the PYRamid

Cytosine, Uracil and Thymine are Pyrimidines.

[Yacoubb]

In differentiating between microevolution and macroevolution:

Micro: VSSR - Variation within a species, Selecting factor/agent, Survival of the fittest, Reproduction.

Macro: VISSR - Variation within a species, Isolating barrier, Selecting factor/agent, Survival of the fittest, Reproduction.

The first S in mine is a little more specific than yours, as it explicitly mentions the application of a selecting factor

When mentioning macroevolution, does the physical barrier lead to allopatric speciation? That is, the physical barrier separates the two groups, which are exposed to different selecting agents in their respective environments?

[pi]

CUT the PYRamid

Cytosine, Uracil and Thymine are Pyrimidines.

Ruining Douchy's thing here

You get a CUT from a PYRamid because they are sharp

[alondouek]

When mentioning macroevolution, does the physical barrier lead to allopatric speciation? That is, the physical barrier separates the two groups, which are exposed to different selecting agents in their respective environments?

Not really. The main means of evolutionary development in plants is by sympatric speciation, due to the difficulty in achieving reproductive isolation by seed-dispersal mechanisms.

[alondouek]

Ruining Douchy's thing here

You get a CUT from a PYRamid because they are sharp

In a similar vein, cytosine and thymine are pyrimidines - they both have y. So is uracil, but I suppose the example is still good for DNA

[Yacoubb]

Ruining Douchy's thing here

LOL sorry

[Stick]

Here's one we use at our school for mitosis: I peed on the mat, see (C)?

[slothpomba]

Kevin puts cake on for great snacks (thats the non-dirty version of it anyway)

Kingdom
Phylyum
Class
Order
Family
Genus
Species

If you prefer the other one (its heaps easier to remember imo)...

Spoiler

Kevin Puts Condoms On For Great Sex