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November 23, 2019, 01:51:28 pm

Author Topic: VCE Biology Question Thread  (Read 1436777 times)  Share 

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Jason12

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Re: VCE Biology Question Thread
« Reply #2745 on: September 11, 2014, 09:16:43 pm »
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what is the significance of the foramen magnum and wider pelvis in homo sapiens?
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Re: VCE Biology Question Thread
« Reply #2746 on: September 11, 2014, 09:25:11 pm »
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what is the significance of the foramen magnum and wider pelvis in homo sapiens?
The foramen magnum position in Homo sapiens allows for the spinal cord to be placed along our backs... which in turn lets us to stand upright on two feet. Secondly the wider pelvic outlet in Homo sapiens is an adaptation permitting the birth of offspring.
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DJA

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Re: VCE Biology Question Thread
« Reply #2747 on: September 11, 2014, 09:46:14 pm »
+1
The foramen magnum position in Homo sapiens allows for the spinal cord to be placed along our backs... which in turn lets us to stand upright on two feet. Secondly the wider pelvic outlet in Homo sapiens is an adaptation permitting the birth of offspring.

Just to add to that significance: While hominid family always had a pelvic outlet to allow reproduction + birth of offspring, the key significance here is the wider pelvic outlet in homo sapiens that allows for offspring with a larger head (which is limited evolutionarily by size of opening) and hence the evolution of larger brain size which can correspond to increasing intelligence that characterizes our genus.
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Re: VCE Biology Question Thread
« Reply #2748 on: September 12, 2014, 01:00:20 pm »
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Are hominoids a legitimate taxonomic group?
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anat0my

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Re: VCE Biology Question Thread
« Reply #2749 on: September 12, 2014, 08:24:11 pm »
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Why does DNA need to be cut up by restriction enzymes before analysis?  :)

melons

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Re: VCE Biology Question Thread
« Reply #2750 on: September 13, 2014, 09:39:08 am »
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Why does DNA need to be cut up by restriction enzymes before analysis?  :)

So a specific gene or area can be observed and studied.
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katiesaliba

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Re: VCE Biology Question Thread
« Reply #2751 on: September 13, 2014, 02:22:35 pm »
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Do we need to know the different types of diseases (such as social, environmental, etc) and the definitions of words like symptoms, signs, incubation/infective periods, acute/chronic illnesses, asymptomatic, and ecdemic/endemic diseases? This isn't specified on the study design but is covered in my textbook :)   
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katiesaliba

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Re: VCE Biology Question Thread
« Reply #2752 on: September 13, 2014, 02:34:13 pm »
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The 'out-of Africa' theory states that interbreeding did not occur between hominins (according to my tssm notes) and is the most accepted theory for human evolution. However, isn't there evidence that interbreeding did occur between neanderthals and homo sapiens? 
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katiesaliba

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Re: VCE Biology Question Thread
« Reply #2753 on: September 13, 2014, 02:38:53 pm »
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Hi all,
Does anyone know about any good biology lectures running these holidays which aren't too expensive and are in melbourne cbd or around South Eastern suburbs?
I've checked out neap and tsfx and they cost so much! :(
Thanks!

Try connect education :) I liked their unit 3 revision lectures. They have comprehensive yet succinct notes! 
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melons

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Re: VCE Biology Question Thread
« Reply #2754 on: September 13, 2014, 03:46:12 pm »
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Try connect education :) I liked their unit 3 revision lectures. They have comprehensive yet succinct notes!

Thank you! :)
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vox nihili

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Re: VCE Biology Question Thread
« Reply #2755 on: September 13, 2014, 04:28:19 pm »
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The 'out-of Africa' theory states that interbreeding did not occur between hominins (according to my tssm notes) and is the most accepted theory for human evolution. However, isn't there evidence that interbreeding did occur between neanderthals and homo sapiens?

There's very strong evidence that interbreeding did occur. Denisovians also interbred with humans
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katiesaliba

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Re: VCE Biology Question Thread
« Reply #2756 on: September 13, 2014, 05:46:07 pm »
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There's very strong evidence that interbreeding did occur. Denisovians also interbred with humans

So does that falsify the out-of-Africa theory?
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vox nihili

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Re: VCE Biology Question Thread
« Reply #2757 on: September 13, 2014, 06:00:37 pm »
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So does that falsify the out-of-Africa theory?

No. A few reasons. I'm not sure what basis you have for the suggestion that the OoA hypothesis indicates that no interbreeding occurred (maybe it does, just not sure). Whether or not interbreeding occurred shouldn't be too important to the claims of the hypothesis.
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Re: VCE Biology Question Thread
« Reply #2758 on: September 13, 2014, 06:14:04 pm »
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do all members of the same species have the same genome?

vox nihili

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Re: VCE Biology Question Thread
« Reply #2759 on: September 13, 2014, 06:33:24 pm »
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do all members of the same species have the same genome?

Nope. A genome is an individual's genetic material.
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