Understanding and building phylogenetic trees | High school biology | Khan Academy

Constructing a phylogenetic tree involves hypothesizing evolutionary relationships among species based on observable traits and genetic evidence. By practicing parsimony, we aim for the simplest explanation. This graphical representation helps determine relatedness and common ancestors, allowing us to understand the evolutionary history of different species.

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[ziolp]

This is very clear and helped me understand the phylogentic tree for my exam. Also, your voice is crisp and smooth. So that helped too.

[lauragordon]

The instructor moved at a sufficient enough pace to avoid distraction. This person also spoke in basic terms which enhanced absorption of the material. Very well done! Thank you!

[gelivu]

You explain this topic better than our biology teacher.

[MrKarenke]

watching this 4 hours before my first-year biology exam

[marissabell]

Your voice is so soothing. You have gotten me through Chemistry, math and biology. You are a savior before exams.

[dilkhush]

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[anitaarnold]

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[keidenpark]

Oh my word thank you so much. This was clear and very understandable. I hope I can get it right for my assignments and exams cause the organisms I’m getting are difficult.

[villainousshowerhairclump]

thank you!! I have a biology test and was away when my teacher taught this; this helped me understand it, so hopefully, I'll get a good grade!

[deleteeeeeeed]

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[wolfyyt]

I know it’s not this video but my sister just wears her earbuds to her stats class and she listens to you instead of her teacher.

She has an A while everyone else has a C

[hiromishimada]

"parsimony might sound good but actually it means cheap " i laughed hard at that hahahaa

[alisonmalekian]

so you basically look for most common to least. Ugh I have such a hard time with these trees like I don't see the point of this but this video helped me get a better understanding

[jazzybear]

Do you like know everything? Lmao everytime I look for something on YouTube for school you come up. I was surprised to see you even teach college algebra. Thank you for your videos!

[minney]

Not all heroes wear capes! Thank you so much for this video!

[phenomenalivan]

Please which app do you use to make your tutorial videos

[pbscampus]

I ran away from the textbook when I couldn't get it. I came here, and said " Aha!". Thank you.

[jessejaja]

It's like this guy is my classmate.He explains every problem directly as if he was in my class Be it chemistry, Maths or Bio

[evanb.]

The way he drew the line under the word parsimony at 6:00 was odly satisfying

[jasminecox]

I LOVE Khan Academy! I learn so much better.