Homework Help: Science

ocarinagirl · 02-24-2005, 05:07 PM

GRAAAAAH SCIENCE.

This will include but is not limited to: Earth sciences, astronomy, biology, human anatomy, physical science, chemistry, etc.

I think Jay should be the science guy. Nehehehe. [img]smile.gif[/img]

SuperLuigi64 · 02-24-2005, 07:01 PM

Chemistry and biology? Outta mah way [img]tongue.gif[/img]

Godot · 02-24-2005, 08:53 PM

I don't fully understand the difference between a Homozygous and a Heterozygous. I know (Same)Homo- and (Different)Hetero-, but the second part is leaving me in the dark.

SuperLuigi64 · 02-24-2005, 09:32 PM

Zygous refers to the alleles of a particulr gene. If you are homozygous for blue eye color, that means all your genes carry the trit for blue eyes--you can't pass on any other colors. But if you're heterozygous, that means that even if only one trait is displayed, you have two. In this case, while you have blue eyes, being heterozygous means you have the allele for green or brown eyes as well, nd could pass those on instead.

"Zygous" refers to the zygote, or a fertilized egg, because that is the point when traits are determined.

[ February 24, 2005, 09:34 PM: Message edited by: SuperLuigi64 ]

Kirin Damascus · 02-24-2005, 09:36 PM

Well, if I remember correctly, homo- and heterogenous are referring to the alleles of genes of traits in an organism. If it's homozygous, it has two of the same copies of a gene.

For example is the genotype is AA or aa, then that gene is homozygous.

Heterozygous has different alleles for the gene, having a genotype of Aa.

Of course, I might be wrong about this, so you could check Wikipedia for "homozygous" and "heterozygous"

Prince Toad · 02-24-2005, 09:39 PM

^Ya, that's right. AA is homozygous dominant, aa is homozygous recessive.

Godot · 02-24-2005, 09:57 PM

Ah. I see. Thank you.

Just so I got this down pat...

Homozygous: Big letter (B)

Hetrozygous: Small letter (b)

Thanks. ^^

Beam Yosho the Drunkard · 02-24-2005, 10:00 PM

However, the dominant allele in heterozygous trait shows up first.

And there's a way to "predict" the outcome of an offsprings traits w/ alleles, using a Box, called a Punnett Sqaure. (EDIT: Thanks PT.) Here's an example:

This also means that the offspring has a 1/2 chance of carring the Green eye trait ALONG with the blue eyes.

If the offspring has green eyes, they're purebred, so to speak, for that one particluar trait. For blue eyes, they can be either mixed(heterozygous) or pure (homozygous.)

A little fun fact also: Sometimes, in rare cases, BOTH traits will appear. For instance the offspring could have one blue eye and one green eye. Or have both eyes with an odd mixture of green and blue.

[ February 24, 2005, 10:06 PM: Message edited by: Beam Yosho the Drunkard ]

ocarinagirl · 02-24-2005, 10:01 PM

^^...Wait, wait, no.

Capital letters mean a dominant gene and lowercase mean recessive.

Ex: Brown hair is dominant (B)
Blonde hair is recessive (b)

Yes, yes?

(And I hereby appoint SL to be head of the science topic now and forever, Amen) [img]tongue.gif[/img]

Prince Toad · 02-24-2005, 10:04 PM

^Yep. Those are Punnett squares, Beam.

[sage] · 02-24-2005, 11:22 PM

Those things were the only thing i liked about biology, and I can't remember them. lol

SuperLuigi64 · 02-25-2005, 03:18 AM

Let's use hair as an example.

Homozygous: BB, bb(only displays the trait B for brown hair or b for blonde hair; manifests as brown or blonde hair)

Heterozygous: Bb(holds the traits B for brown hair and b for blonde hair; becuse Brown is a capitl letter, it is considered the dominant trait; thus, the hair will show up as brown hair. Occasionally, traits will mixed, resulting in dirty blonde in this case)

By the way, memorizing the Punnett Square is the most effective way to deal with questions of this nature, as drawing one out will almost always give you the answer.

Godot · 02-25-2005, 03:04 PM

I took the test today, and I had a basic understanding. Thank you, everone.

Tablecloth Girl · 08-11-2005, 03:13 PM

I was wondering if anyone could help me pronounce this word. It's a tobacco virus thing, so I figured that it would be best to but this in Science.

ACETYL*SERYL*TYROSYL*SERYL*ISO*LEUCYL*THREONYL*SER YL*PROLYL*SERYL*GLUTAMINYL*PHENYL*ALANYL*VALYL*PHE NYL*ALANYL*LEUCYL*SERYL*SERYL*VALYL*TRYPTOPHYL*ALA NYL*ASPARTYL*PROLYL*ISOLEUCYL* GLUTAMYL*LEUCYL*LEUCYL*ASPARAGINYL*VALYL*CYSTEINYL *THREONYL*SERYL*SERYL*LEUCYL*GLYCYL*ASPARAGINYL*GL UTAMINYL*PHENYL*ALANYL*GLUTAMINYL*THREONYL*GLUTAMI NYL*GLUTAMINYL*ALANYL*ARGINYL* THREONYL*THREONYL*GLUTAMINYL*VALYL*GLUTAMINYL*GLUT AMINYL*PHENYL*ALANYL*SERYL*GLUTAMINYL*VALYL*TRYPTO PHYL*LYSYL*PROLYL*PHENYL*ALANYL*PROLYL*GLUTAMINYL* SERYL*THREONYL*VALYL*ARGINYL*P HENYL*ALANYL*PROLYL*GLYCYL*ASPARTYL*VALYL*TYROSYL* LYSYL*VALYL*TYROSYL*ARGINYL*TYROSYL*ASPARAGINYL*AL ANYL*VALYL*LEUCYL*ASPARTYL*PROLYL*LEUCYL*ISOLEUCYL *THREONYL*ALANYL*LEUCYL*LEUCYL *GLYCYL*THREONYL*PHENYL*ALANYL*ASPARTYL*THREONYL*A RGINYL*ASPARAGINYL*ARGINYL*ISOLEUCYL*ISOLEUCYL*GLU TAMYL*VALYL*GLUTAMYL*ASPARAGINYL*GLUTAMINYL*GLUTAM INYL*SERYL*PROLYL*THREONYL*THR EONYL*ALANYL*GLUTAMYL*THREONYL*LEUCYL*ASPARTYL*ALA NYL*THREONYL*ARGINYL*ARGINYL*VALYL*ASPARTYL*ASPART YL*ALANYL*THREONYL*VALYL*ALANYL*ISOLEUCYL*ARGINYL* SERYL*ALANYL*ASPARAGINYL*ISOLE UCYL*ASPARAGINYL*LEUCYL*VALYL*ASPARAGINYL*GLUTAMYL *LEUCYL*VALYL*ARGINYL*GLYCYL*THREONYL*GLYCYL*LEUCY L*TYROSYL*ASPARAGINYL*GLUTAMINYL*ASPARAGINYL*THREO NYL*PHENYL*ALANYL*GLUTAMYL*SER YL*METHIONYL*SERYL*GLYCYL*LEUCYL*VALYL*TRYPTOPHYL* THREONYL*SERYL*ALANYL*PROLYL*ALANYL*SERINE

Thanks.

***CaptHayfever*** · 08-12-2005, 04:02 PM

I see spaces; that's more than one word.

And remember, "I'm-a Luigi, number one!"

Tablecloth Girl · 08-12-2005, 06:33 PM

I can't find any spaces. those are the -'s so it doesn't mess up the page.

The Missing Link · 08-12-2005, 06:47 PM

It's pronounced, "Gihv iht up awl-reh-dee."

Zelda: The Grand Adventures | Triforce MUCK
ザ行方不明リンク悪いユウモアの賢人

***CaptHayfever*** · 08-14-2005, 01:28 PM

Quote:

...EUCYL GLUTA...

There's the first of several spaces.

And remember, "I'm-a Luigi, number one!"

imported_Andrew · 10-25-2005, 05:39 PM

Is a chain reaction more likely to occur in two separate piceces of uranium-235 or in the same pieces stuck together? Why?

Does the mass of a nucleon after it has been pulled from an atomic nucleus depend on which nucleus it was extracted from?

02-24-2005, 05:07 PM	#1
ocarinagirl Senior Member Join Date: Jan 2001 Location: Ehhh? What? Where am I?! Gender: Posts: 3,010 Thanks: 0 Thanked 0 Times in 0 Posts	GRAAAAAH SCIENCE. This will include but is not limited to: Earth sciences, astronomy, biology, human anatomy, physical science, chemistry, etc. I think Jay should be the science guy. Nehehehe. [img]smile.gif[/img]

02-24-2005, 07:01 PM	#2
SuperLuigi64 Senior Member Join Date: Jun 2000 Location: Louisiana Gender: Posts: 7,699 Thanks: 0 Thanked 0 Times in 0 Posts	Chemistry and biology? Outta mah way [img]tongue.gif[/img]

02-24-2005, 08:53 PM	#3
Godot Senior Member Join Date: Oct 2003 Location: Coffee. Gender: Posts: 6,054 Thanks: 169 Thanked 161 Times in 102 Posts	I don't fully understand the difference between a Homozygous and a Heterozygous. I know (Same)Homo- and (Different)Hetero-, but the second part is leaving me in the dark.

02-24-2005, 09:32 PM	#4
SuperLuigi64 Senior Member Join Date: Jun 2000 Location: Louisiana Gender: Posts: 7,699 Thanks: 0 Thanked 0 Times in 0 Posts	Zygous refers to the alleles of a particulr gene. If you are homozygous for blue eye color, that means all your genes carry the trit for blue eyes--you can't pass on any other colors. But if you're heterozygous, that means that even if only one trait is displayed, you have two. In this case, while you have blue eyes, being heterozygous means you have the allele for green or brown eyes as well, nd could pass those on instead. "Zygous" refers to the zygote, or a fertilized egg, because that is the point when traits are determined. [ February 24, 2005, 09:34 PM: Message edited by: SuperLuigi64 ]

02-24-2005, 09:36 PM	#5
Kirin Damascus Member Join Date: Sep 2001 Gender: Posts: 1,517 Thanks: 0 Thanked 0 Times in 0 Posts	Well, if I remember correctly, homo- and heterogenous are referring to the alleles of genes of traits in an organism. If it's homozygous, it has two of the same copies of a gene. For example is the genotype is AA or aa, then that gene is homozygous. Heterozygous has different alleles for the gene, having a genotype of Aa. Of course, I might be wrong about this, so you could check Wikipedia for "homozygous" and "heterozygous"

02-24-2005, 09:39 PM	#6
Prince Toad Veteran Member Join Date: Aug 2001 Location: Rookery Gender: Posts: 11,720 Thanks: 50 Thanked 65 Times in 56 Posts	^Ya, that's right. AA is homozygous dominant, aa is homozygous recessive.

02-24-2005, 09:57 PM	#7
Godot Senior Member Join Date: Oct 2003 Location: Coffee. Gender: Posts: 6,054 Thanks: 169 Thanked 161 Times in 102 Posts	Ah. I see. Thank you. Just so I got this down pat... Homozygous: Big letter (B) Hetrozygous: Small letter (b) Thanks. ^^

02-24-2005, 10:00 PM	#8
Beam Yosho the Drunkard Senior Member Join Date: Apr 2003 Location: The oversized rock of Hawaii. Gender: Posts: 5,670 Thanks: 5 Thanked 17 Times in 13 Posts	However, the dominant allele in heterozygous trait shows up first. And there's a way to "predict" the outcome of an offsprings traits w/ alleles, using a Box, called a Punnett Sqaure. (EDIT: Thanks PT.) Here's an example: This also means that the offspring has a 1/2 chance of carring the Green eye trait ALONG with the blue eyes. If the offspring has green eyes, they're purebred, so to speak, for that one particluar trait. For blue eyes, they can be either mixed(heterozygous) or pure (homozygous.) A little fun fact also: Sometimes, in rare cases, BOTH traits will appear. For instance the offspring could have one blue eye and one green eye. Or have both eyes with an odd mixture of green and blue. [ February 24, 2005, 10:06 PM: Message edited by: Beam Yosho the Drunkard ]

02-24-2005, 10:01 PM	#9
ocarinagirl Senior Member Join Date: Jan 2001 Location: Ehhh? What? Where am I?! Gender: Posts: 3,010 Thanks: 0 Thanked 0 Times in 0 Posts	^^...Wait, wait, no. Capital letters mean a dominant gene and lowercase mean recessive. Ex: Brown hair is dominant (B) Blonde hair is recessive (b) Yes, yes? (And I hereby appoint SL to be head of the science topic now and forever, Amen) [img]tongue.gif[/img]

02-24-2005, 10:04 PM	#10
Prince Toad Veteran Member Join Date: Aug 2001 Location: Rookery Gender: Posts: 11,720 Thanks: 50 Thanked 65 Times in 56 Posts	^Yep. Those are Punnett squares, Beam.

02-24-2005, 11:22 PM	#11
[sage] Veteran Member Join Date: Dec 2000 Location: Florida Gender: Posts: 18,304 Thanks: 1 Thanked 13 Times in 10 Posts	Those things were the only thing i liked about biology, and I can't remember them. lol

02-25-2005, 03:18 AM	#12
SuperLuigi64 Senior Member Join Date: Jun 2000 Location: Louisiana Gender: Posts: 7,699 Thanks: 0 Thanked 0 Times in 0 Posts	Let's use hair as an example. Homozygous: BB, bb(only displays the trait B for brown hair or b for blonde hair; manifests as brown or blonde hair) Heterozygous: Bb(holds the traits B for brown hair and b for blonde hair; becuse Brown is a capitl letter, it is considered the dominant trait; thus, the hair will show up as brown hair. Occasionally, traits will mixed, resulting in dirty blonde in this case) By the way, memorizing the Punnett Square is the most effective way to deal with questions of this nature, as drawing one out will almost always give you the answer.

02-25-2005, 03:04 PM	#13
Godot Senior Member Join Date: Oct 2003 Location: Coffee. Gender: Posts: 6,054 Thanks: 169 Thanked 161 Times in 102 Posts	I took the test today, and I had a basic understanding. Thank you, everone.

08-11-2005, 03:13 PM	#14
Tablecloth Girl Member Join Date: Aug 2001 Location: Earth Gender: Posts: 1,335 Thanks: 2 Thanked 1 Time in 1 Post	I was wondering if anyone could help me pronounce this word. It's a tobacco virus thing, so I figured that it would be best to but this in Science. ACETYLSERYLTYROSYLSERYLISOLEUCYLTHREONYLSER YLPROLYLSERYLGLUTAMINYLPHENYLALANYLVALYLPHE NYLALANYLLEUCYLSERYLSERYLVALYLTRYPTOPHYLALA NYLASPARTYLPROLYLISOLEUCYL* GLUTAMYLLEUCYLLEUCYLASPARAGINYLVALYLCYSTEINYL THREONYLSERYLSERYLLEUCYLGLYCYLASPARAGINYLGL UTAMINYLPHENYLALANYLGLUTAMINYLTHREONYLGLUTAMI NYLGLUTAMINYLALANYLARGINYL* THREONYLTHREONYLGLUTAMINYLVALYLGLUTAMINYLGLUT AMINYLPHENYLALANYLSERYLGLUTAMINYLVALYLTRYPTO PHYLLYSYLPROLYLPHENYLALANYLPROLYLGLUTAMINYL SERYLTHREONYLVALYLARGINYLP HENYLALANYLPROLYLGLYCYLASPARTYLVALYLTYROSYL* LYSYLVALYLTYROSYLARGINYLTYROSYLASPARAGINYLAL ANYLVALYLLEUCYLASPARTYLPROLYLLEUCYLISOLEUCYL THREONYLALANYLLEUCYLLEUCYL GLYCYLTHREONYLPHENYLALANYLASPARTYLTHREONYLA RGINYLASPARAGINYLARGINYLISOLEUCYLISOLEUCYLGLU TAMYLVALYLGLUTAMYLASPARAGINYLGLUTAMINYLGLUTAM INYLSERYLPROLYLTHREONYLTHR EONYLALANYLGLUTAMYLTHREONYLLEUCYLASPARTYLALA NYLTHREONYLARGINYLARGINYLVALYLASPARTYLASPART YLALANYLTHREONYLVALYLALANYLISOLEUCYLARGINYL SERYLALANYLASPARAGINYLISOLE UCYLASPARAGINYLLEUCYLVALYLASPARAGINYLGLUTAMYL LEUCYLVALYLARGINYLGLYCYLTHREONYLGLYCYLLEUCY LTYROSYLASPARAGINYLGLUTAMINYLASPARAGINYLTHREO NYLPHENYLALANYLGLUTAMYLSER YLMETHIONYLSERYLGLYCYLLEUCYLVALYLTRYPTOPHYL* THREONYLSERYLALANYLPROLYLALANYL*SERINE Thanks.

08-12-2005, 04:02 PM	#15
*CaptHayfever* Smash SuperMod Join Date: Jul 2002 Location: (n) - the place where I am Gender: Posts: 27,661 Thanks: 1,991 Thanked 2,486 Times in 1,513 Posts	I see spaces; that's more than one word. And remember, "I'm-a Luigi, number one!"

08-12-2005, 06:33 PM	#16
Tablecloth Girl Member Join Date: Aug 2001 Location: Earth Gender: Posts: 1,335 Thanks: 2 Thanked 1 Time in 1 Post	I can't find any spaces. those are the -'s so it doesn't mess up the page.

08-12-2005, 06:47 PM	#17
The Missing Link Professional Lurker Join Date: Dec 2000 Location: New Hyrule, Washington, US Gender: Posts: 17,128 Thanks: 405 Thanked 606 Times in 368 Posts	It's pronounced, "Gihv iht up awl-reh-dee." Zelda: The Grand Adventures \| Triforce MUCK ザ行方不明リンク悪いユウモアの賢人

10-25-2005, 05:39 PM	#19
imported_Andrew Banned Join Date: Dec 1969 Posts: 0 Thanks: 0 Thanked 0 Times in 0 Posts	Is a chain reaction more likely to occur in two separate piceces of uranium-235 or in the same pieces stuck together? Why? Does the mass of a nucleon after it has been pulled from an atomic nucleus depend on which nucleus it was extracted from?