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13 years ago

campbell biology 7th edition Chapter 30 Notes

Chapter 30
Plant Diversity II: The Evolution of Seed Plants
Lecture Outline
Overview: Feeding the World
• The seed arose about 360 million years ago.
? Seed plants, including gymnosperms and angiosperms, have come to dominate

duddy 3193 1 Reply

13 years ago

group selection

The damage of allot pathogens in the body is interrupting in a big intensity, but later become more moderate.
One explanation is, certainly, the immune system of the host that contend with the pathogens, but another explanation is that the

asaf 1207 3 Replies

13 years ago

Mechanism of Muscle Contraction

<a rel="nofollow" href="https://http://www.ilearnscience.co.in/images/Rio1.swf" target="_blank">https://http://www.ilearnscience.co.in/images/Rio1.swf</a>

bio_man 1316 N/A

13 years ago

Eye muscles oculocephalic reflex, control of eye muscles

<a rel="nofollow" href="https://http://library.med.utah.edu/kw/animations/hyperbrain/oculo_reflex/oculocephalic2.swf" target="_blank">https://http://library.med.utah.edu/kw/animations/hyperbrain/oculo_reflex/oculocephalic2.swf</a>

bio_man 1246 N/A

13 years ago

How BOTOX Works (Wrinkles)

<a rel="nofollow" href="https://http://illumin.usc.edu/multimedia/6ii_132_botox.swf" target="_blank">https://http://illumin.usc.edu/multimedia/6ii_132_botox.swf</a>

bio_man 1461 N/A

13 years ago

Animation - Electron Transport Chain

<a rel="nofollow" href="https://http://www.sumanasinc.com/webcontent/animations/content/electrontransport.swf" target="_blank">https://http://www.sumanasinc.com/webcontent/animations/content/electrontransport.swf</a>

bio_man 1081 N/A

13 years ago

What is an Enzyme?

<a rel="nofollow" href="https://http://www.northland.cc.mn.us/biology/biology1111/animations/enzyme.swf" target="_blank">https://http://www.northland.cc.mn.us/biology/biology1111/animations/enzyme.swf</a>

biolove 897 N/A

biolove

13 years ago

Animation: Kidney

<a rel="nofollow" href="https://http://www.biologymad.com/resources/kidney.swf" target="_blank">https://http://www.biologymad.com/resources/kidney.swf</a>

bio_man 958 N/A

13 years ago

New function in the duplication process

Pleas look at the word document the quotation is there ,tanks!

asaf 1346 3 Replies

13 years ago

: Neo-functionalization :evolution

Hello I need some help in the evolution section, that call: Neo-functionalization :
The "simple" process:
1.
When we aiding a future of purifying selection to the simple process of Neo-functionalization; how those it effect

asaf 1990 2 Replies

13 years ago

An Excellent Scientific Calculator

<a rel="nofollow" href="https://http://www.ilc.org/aat/calc.swf" target="_blank">https://http://www.ilc.org/aat/calc.swf</a>

bio_man 1029 1 Reply

13 years ago

Brainstorming help needed - How might you resolve the following question?

In the field of EvoDevo, there are many unanswered questions. One important question is "How do ecological and genomic factors interact to cause the origin of a new species?" How do you think that this question will be resolved?

Shamrock 1924 8 Replies

Shamrock

13 years ago

Parameters affecting adaptation scenarios

. Parameters affecting adaptation scenarios

If we think of adaptation as an adjustment and environmental changes, we have seen that adaptive mutation can occur as a result of two scenarios - different from the population there was no prior

asaf 817 N/A

13 years ago

Adaption and evolution

Quotation about evolution:
1. In what situation we will expect more adaptation from existent diversity: when the surrounding which the organisms live in, is stable or when there's a frequent surrounding changes?
2. How the size of the

asaf 834 1 Reply

13 years ago

[Animation] - DNA Translation

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duddy 1381 1 Reply

ThePsychic

13 years ago

In a muse population theirs 2 alleles in a locus ,that effected on the level of producing insulin, ...

Question, pleas help me someone that really knows I need to sent my paper tomorrow?
In a muse population theirs 2 alleles in a locus ,that effected on the level of producing insulin, individuals that homozygote to the common allele A ,product so

asaf 746 1 Reply

13 years ago

Glass&Ruby, Chemical bonding??

Hi, i just need to know what kind of chemical bonding glass and ruby is...and if its possible explain abit about why theyre that type of chemical bonding whether it be ionic,covalent,etc type of bonding...thanks if anyone replies

i looked

mazda215 980 1 Reply

yessir

13 years ago

hello everyone I need to sent my paper work tomorrow please help me, someone tha

The dynamic of selection in diploidic:
Experiences and views in a diploidic marked population (1)
In a locus with 2 alleles ,shown that the fitness are: AA 15%, Aa 20%,aa10%
In another population of the same species the fitness were

asaf 739 1 Reply

13 years ago

another opoinion

hey please answer somone that realy help :
right or wrong question :
1.when homozygous has an advantage on Heterozygous :
the most widespread ourcome is that the common allele (withe a frequency above 50%) willtake over the

asaf 664 N/A

13 years ago

someone that realy help 2

asaf 753 1 Reply

13 years ago

someone that realy help

hey i need areal help for my duty so i will realy be glade if someone realy help and not just writ nothing:

Question:
Cuple-cuple:
In most populations of animals in nature there's a 1:1 ratio between the number

asaf 720 1 Reply

13 years ago

nature selection

Question:
Cuple-cuple:
In most populations of animals in nature there's a 1:1 ratio between the number of males and females' .this ratio is not the force of nature – parents, theoretically, can make more descendant males th

asaf 964 1 Reply

13 years ago

right or wrong questions : evolution

please answer the next questions in right or wrong :
When humuzigottym advantage over Ahtrozigottym:
1. Common result is the common allele (frequency 50%) control the population.
On
2? Genetic variation will f

asaf 1169 1 Reply

13 years ago

Bacterial Chromosome Compaction (Super-coiling) animation

How does the packaging of a bacterial chromosome differ from eukaryotic chromosome packaging?

Eukaryotic DNA is packaged into chromosomes. Chromosomes are single strands of DNA. Bacterial DNA is packaged into a single chromosome tha

sarah! 2664 1 Reply

13 years ago

coalescent tree - evaluation

hey , i wiil be realy gald if someone can help me, i have a work paper to send toay and i stok in thoes 2 questions , so i will be realy glad if someone who knows in evaluation will help me. Undecided

1. coalescent tree : if we talki

asaf 1030 1 Reply

13 years ago

Evolution4

The inheritance of acquired characteristics was widely regarded as true up to the beginning of the 20th century. Explain the concept and how it was thought to fit into the evolutionary process by its supporters. Certain discoveries undermined the imp

alex 771 1 Reply

13 years ago

Neutral evaluation within and between populations -1 ?

Hello ! Pleas help me Neutral Face

! the questions:
1. For example, if I know that the duration generation of primate is longer than the duration generation of cow and pig, how can I fix, and calculate again the duration between primate & cow and a p

asaf 932 1 Reply

sarah!

13 years ago

Neutral evaluation within and between populations -2 ?

hey :-) following the next table
36 81 93 177 342 402 714
Human 1 GUA ACC GUA AUA CCG AGC CGG
Human 2 GCA ACC GUU AUA CCA AGC CGG
Human 3 GUA ACA GUA AUG CCA AGC CGA
Human 4 GUA ACA GUA AUG CCA AGU CGA

1. the

asaf 959 N/A

13 years ago

Good and Bad Sugars

This is something I have been curious about for a long time.

Why are the sugars in fruits considered "good" sugars,
whereas table sugar is considered "bad" sugars?

Is it because sugars in fruits a

crazzyjazzy 1944 3 Replies

13 years ago

[Animation] - Interactive Mitosis

<a rel="nofollow" href="https://http://www.edumedia-sciences.com/en/fl/70/9247-37077d059b8cdfe2f65eb11795e832a3" target="_blank">https://http://www.edumedia-sciences.com/en/fl/70/9247-37077d059b8cdfe2f65eb11795e832a3</a>

bio_man 847 N/A

13 years ago

[Animation] - Comparison of Meiosis and Mitosis

<a rel="nofollow" href="https://http://highered.mcgraw-hill.com/sites/dl/free/0072495855/291136/compare_meiosis_mitosis.swf" target="_blank">https://http://highered.mcgraw-hill.com/sites/dl/free/0072495855/291136/compare_meiosis_mitosis.swf</a>

Enjoy Person Raising Both Hands in Celebration

Person Raising Both Hands in Celebration

bio_man 3096 N/A

13 years ago

[Animation] - How Enzymes Work

<a rel="nofollow" href="https://http://highered.mcgraw-hill.com/sites/dl/free/0072495855/291136/enzymes.swf" target="_blank">https://http://highered.mcgraw-hill.com/sites/dl/free/0072495855/291136/enzymes.swf</a>

bio_man 2363 N/A

13 years ago

Cool Bubble Demonstration!

Fun! Anyone care to explain this phenomenon?

bio_man 1045 N/A

13 years ago

Me Teaching the Microscope

bio_man 964 1 Reply

13 years ago

[Animation] - How the NAD+ Works

Why are oxidation and reduction important in cellular respiration?

Reduction-oxidation (redox) reactions are important in cellular respiration and other biochemical pathways because redox reactions are a good way to transfer energy

sarah! 1235 1 Reply

13 years ago

Evolution5

Darwin found that the faunas and floras of oceanic islands tend to be impoverished and unbalanced when compared to those of continental islands. Explain and provide examples of this difference. Outline the evolutionary explanation Darwin proposed to

alex 916 1 Reply

13 years ago

Evolution6

Natural selection can result in changes in allele frequencies. Can natural selection cause the stable coexistence of two or more alleles at the same locus? If not, explain why that is. If so, give an example and explain how the equilibrium is maintai

alex 653 1 Reply