Example punnet square for sex-linked recessive trait | High school biology | Khan Academy

Example punnet square for sex-linked recessive trait.

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[JohnSpeas-xrdc]

This makes the test I have to take tomorrow feel like a walk on the park. THANK YOU!!🙏🏿

[CopperLegend]

Thank you so much!!! My teacher makes things super murky and unclear with his 20 side tangents, had no clue it was this easy!

[priyashanker]

Yess it was a lot useful!! Thanks for this good explanation...🤗

[dariyahussainshaik]

THANKS FOR MAKING IT SO SIMPLE TO UNDERSTAND

[ayeshaarslan]

thank u that was so helpful as a college student where teachers expect u to know this stuff w/o explaining it. Appreciate it!!

[jasarenoashleyvignem.]

IN GOD NAME I WILL PERFECT MY THIRD EXAMINATION🎉🎉🎉

[karimebeid]

i bet everyone watching has a test the next day and don't understand anything

[helvindapewa]

Very helpful I was busy sunrising for biology

[touhidtouhid]

i studied it in my zoology book. i'm from Bangladesh.

[MillyCan]

Very good explanation! I was able to understand it! Thank You!

[aboutstudies]

Thank you Sir. It is very helpful. I have a query, at 4:13 it should be "50% chance for having non-Hemophiliac son"? Please clarify

[girlwhoislearningrussian]

Amazing explanation, thank you good sir.

[rajhandreymontillana]

sir, how about writing the genotypic and phenotypic ratio of that offspring using the problem you used in this video? please help me, I'm so confused about writing it.

I'm confused whether writing the genotypic and phenotypic ratio is to write is based on gender or writing it as whole. Hope you help me with this concern. Thanks

[minnie]

25% I am so confused? for the daughter he said 50% because there is only two possible ways to get but why for male is 25%?

[forks_lala]

Hey can I ask? Does this also apply to Color Blindness? (c = colorblind, C = Normal)

[chelsey]

you had reported that it was a 50% chance of having hemophilia as a daughter, but the Hh for the daughter is heterozygous non disorder/ only carrier.. So she doesn't actually have it. Her children could. That being said the percentage to answer the question the way its worded, "Percentage that she will HAVE hemophilia", that is actually only 1:4. Because for recessive disorders you have to have both recessive allele's to have the disorder. similarly, in the x-linked recessive case, the girls have the second X chromosome that work as a back up so to say. She wouldn't actually have the disease.

[abdulbasitimam]

its vary good but i am engineering student so

[cybelaybarzabal]

hi can i ask... what if its animals? Lets say male birds are ZZ and female birds are ZW. And barred feathers are (ZB) while non-barred feathers(Zb)... then if ill make a punnett square between barred female and a non barred male chicken, how do i cross them? Hope you'll notice...

[RunningRicky]

Can you do this one “A family that lives in Kentucky has a rare genetic disorder; some of the family members have blue
skin. Normal skin color (N) is dominant to blue skin (n) color. A woman and man who have normal
skin color produce a child with blue skin.”