Testcross Explained

[@haas9649]

Thanks so much. I'm gonna pass my bio test tmwr because of you

[@vaishnav4271]

Did u pass???

[@haas9649]

@@vaishnav4271 I actually aced it.

[@adams3517]

Home sauce I’m proud of you

[@ARTDEVGRU247]

@@haas9649 my boy 😎

[@Rohan.Reddy.Bandi.]

@@haas9649 great job

[@Vivek2504-zm7kq]

Thanks for clearing my concept.... For 15 minutes me and my friend looking at diagram in book but getting confused each time. After seeing this video i explained whole diagram to my friend 🎉.

[@anonymous203020]

I was having a hard time understanding this topic in my textbook, and your textbook clarified it perfectly. Now I know how to answer a homework question. Thank you!

[@lubeenamm5469]

Spending 3 minutes in this is far better than spending hours in class

[@advaithsajith7535]

2 years later, thanks, the definition of this topic in my textbook is just confusing! thank you for this video, have a great day!

[@cassiecanoo]

thank you so much! I passed my biology quiz with a score of 100%!! thank you for the well explained lesson!!!

[@marianagomez5666]

you taught me more in less than 5 minutes than my teacher has in 2 whole lessons

[@elizabethkain75]

Thank you! We're getting tested on this soon and my professor won't explain this to us and got upset when students asked for clarification!

[@elizabethkain75]

@@jasonzhang7725 Yes! I was in an introduction to Biology class and they reexplain all the things we learned back in high school. I was home schooled and opted for other science classes so I was learning this for the first time. My professor was really mean though and expected me to already know all of it.

[@lukeandy4133]

Y’all need to share this video, she deserves a million

[@tyratran9029]

Thank you so much this video was easy to understand and will help decrease the anxiety I have for my bio test

[@girijajayakrishnan5989]

This was an amazing video. Everything was clearly explained. Thank you!

[@kidushailu1234]

Tomorrow I have an exam I was very stressed but big thanks for you its now easy

[@mahendrandevaraj1745]

Quite interesting with simple explanation tq maam and ur english is easily understandable

[@mohamedhaneef4166]

thank u Ms. Lantz live from India

[@sneha6745]

This was so nicely explained. Thank you so much 😁💕

[@rinkalkumari5610]

Great teaching thank you for your explanation i was having difficulty in this

[@utubeshorts8057]

Thanks so much. I'm gonna pass my bio test tmwr because of you

[@parzivell268]

Im confused, if you do the punnet square twice than how are you supposed to know which of the crosses is the right one??

[@A80-x4r]

This helped so much!! SO well explained, thank you 💛

[@deepaklather8487]

You are .......The best

[@yanyan5898]

Thank you so much ! I can understand everything clearly🥹

[@ramonram1rez]

i passed my bio test with a 10/10 thank you❤

[@km-xu6ie]

thank you Ms.Lantz!

[@SohamChavan-j4m]

Your voice is really mesmerising and thanx for this video❤❤

[@hannahpolitz9768]

So helpful, thank you! Very well explained

[@summarauza.argonza2200]

Thank you for this! 💚💛

[@adnanmahmudshohan4951]

Thank you do much. Please make more videos like this

[@Rohan.Reddy.Bandi.]

Great vid

[@joelvarghese1627]

Thank you so much , it was really helpful

[@dazedavidson]

thank you for this:)

[@Tae123-q1m]

Thank you so much 🤍

[@precioussianruby4074]

Thanks so so much, this is phenomenal

[@MrRoger-pj2gx]

Thank you❤

[@lukeandy4133]

Tanx we need more on medical genetics

[@bhumikaguniyani3531]

thank you this helped me alot

[@Joeythegoats]

i wish you had uploaded video on forked line method too

[@nicolelantz]

Here you go: kzbin.info/www/bejne/npObYmWJftSSm5o

[@Joeythegoats]

@@nicolelantz thank you so much!

[@jacquelinehaneine2061]

Hello! You explained it super well. Do you have any video about DevCross?

[@saeromsae7891]

now this is a clear explanation. thank you so much

[@nicolelantz]

I’m glad you found it helpful!

[@user-vx9gc2xj7i]

Thank you so much!

[@dr.reem.7422]

Nice!.❤

[@salmankhursheed2164]

Best explanation

[@syedkabiralishah8018]

Great work

[@satwikjakhar5585]

most of the people watching are from india..😀😀 because at just 17 years of age in 12th class we have to study this😒😒🙄🙄

[@gladyschalwe8326]

Am watching from Africa 😏😃

[@satwikjakhar5585]

@@gladyschalwe8326 Most😑😑

[@رعدالکردی-ع5م]

Where are you from?

[@p3t1t80s]

I have to study this in class 9 so don’t act like a fool lmao

[@satwikjakhar5585]

@@p3t1t80s me tooo studied this in class 9

[@meetmahakdixit7363]

nice u explained it very nicely

[@dr_abdelhakeem_hemdan]

You're right❤️❤️❤️

[@rona2863]

Thhank you so much

[@judithmurendi1970]

Wow thanks big time

[@pranavraj9009]

Thank for such a nice explanation 😘😘😘

[@pranavraj9009]

I am still watching your other video on genetics.😂

[@ntwariparfait7781]

Thank u very much

[@astic4254]

So, what's the purpose of the test cross again? I mean we already know the yellow pea plant needs can be YY or Yy, is the test cross like proof or something that supports that it will be YY or Yy?

[@nicolelantz]

Yes. A test cross is used to find out if an organism with a dominant phenotype has the homozygous genotype or the heterozygous genotype.

[@adrianamariafuhlage6487]

@@nicolelantz I'm confused on this as well.. it seems like you just proved that both homozygous or heterozygous genotypes are possibilities in the video. So which one is it?

[@siddardhavarma5092]

Simple:.and well explained..😇😊

[@nicolelantz]

Thank you! I hope it was helpful!

[@siddardhavarma5092]

Nicole Lantz ..yes madam .. I'm studying principles of inheritance and it was helpful..! Mam are you teacher.?

[@nicolelantz]

@@siddardhavarma5092 Yes, I am!

[@A80-x4r]

very clear English language i am bilingual

[@sienagerali1801]

yeah thats great and all but it still doesn't tell us what the genotype is, it just gives us options in the case of the yellow plant being crossed with a recessive plant. Are you saying we need to know the offspring phenotype to determine which genotype the yellow plant has?

[@steve-ov6wq]

great thanks!!!

[@lakhandigga]

Nice explanation 👌

[@igog3228]

ty

[@itzmbq]

nice explation sister

[@Editfact324]

You explain in a crystal clear manner but I have a question ...please can you explain why we take homozygous recessive ?

[@Joeythegoats]

bcos it does not interfere with phenotype if we have dominant genotype

[@learning-pe9ww]

👍👍👍

[@seeratkhan5505]

Can you please tell me... What if the test cross yields 100% recessive alleles after crossing homozygous recessive mother with homozygous recessive child?what is the genotype of father? Please tell me

[@nicolelantz]

If you have a homozygous recessive mother, and her offspring are 100% homozygous recessive, than the father of the offspring must also be homozygous recessive. In this case, this would not be a test cross. A test cross requires you to have one parent with the dominant phenotype, crossed to a parent with the recessive phenotype.

[@seeratkhan5505]

@@nicolelantz oh thankyou so much for replying❤️

[@aksharag7386]

❤

[@wizbmgo1527]

Thank you miss appreciate it my exam in 1 hour 0610/42/m/j/2022

[@nortonwedge]

I'm confused as to how you're supposed to know that the green genotype must be homozygous recessive. If you have two unknown genotypes, say two gifted cannabis clones, how would you go about testing that? Thank you. :)

[@pinedarenzzebernedettemarq8885]

May I ask? What is now the genotype of the yellow peas in the example?

[@nicolelantz]

The example covers both genotypes. If the yellow parent plant has green and yellow offspring, then the parent yellow plant is heterozygous. If the yellow parent plant has only yellow offspring, then the parent yellow plant is homozygous for the yellow allele.

[@pinedarenzzebernedettemarq8885]

@@nicolelantz Thankyou for the respond Miss! I'm goin to explain this on my classmate for our next synchronous class this helps alot!

[@JeevanSamagar]

Tomorrow I have exam 😁

[@vasanth9343]

Please upload chromosomal theory of inheritance

[@randomblock5549]

who else came here because of biology

[@nicolelantz]

It is truly the best subject :)

[@wizbmgo1527]

Me here Before the final exam 0610 42 mj 2022

[@MikeDiaz-mf4jz]

Can’t understand, thank u 👍

[@ngichabewilliam2315]

exactly what everyone looks for.

[@elenipagkoulaki1283]

ib students???

[@wizbmgo1527]

All

[@amnazulfiqar8494]

One king Allah

[@shrishyalt]

What does this have to do with the test cross? Not related to biology.

[@bethyeuong]

This helped so much!! SO well explained, thank you 💛

[@nicolelantz]

Beth Hope I’m so glad it was helpful!