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!
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 🎉.
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 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?
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
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.
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?
@@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.
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. :)
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.
Thanks so much. I'm gonna pass my bio test tmwr because of you
Did u pass???
@@vaishnav4271 I actually aced it.
Home sauce I’m proud of you
@@haas9649 my boy 😎
@@haas9649 great job
thank u Ms. Lantz live from India
You explain in a crystal clear manner but I have a question ...please can you explain why we take homozygous recessive ?
bcos it does not interfere with phenotype if we have dominant genotype
most of the people watching are from india..😀😀
because at just 17 years of age in 12th class we have to study this😒😒🙄🙄
Am watching from Africa 😏😃
@@gladyschalwe8326
Most😑😑
Where are you from?
I have to study this in class 9 so don’t act like a fool lmao
@@p3t1t80s me tooo studied this in class 9
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!
Im confused, if you do the punnet square twice than how are you supposed to know which of the crosses is the right one??
Tomorrow I have exam 😁
Spending 3 minutes in this is far better than spending hours in class
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 🎉.
This was an amazing video. Everything was clearly explained. Thank you!
you taught me more in less than 5 minutes than my teacher has in 2 whole lessons
Thank you miss appreciate it my exam in 1 hour 0610/42/m/j/2022
You are .......The best
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?
Yes. A test cross is used to find out if an organism with a dominant phenotype has the homozygous genotype or the heterozygous genotype.
@@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?
i wish you had uploaded video on forked line method too
Here you go: ua-cam.com/video/hb812SIo_e8/v-deo.html
@@nicolelantz thank you so much!
This was so nicely explained. Thank you so much 😁💕
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
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.
@@nicolelantz oh thankyou so much for replying❤️
who else came here because of
biology
It is truly the best subject :)
Me here
Before the final exam 0610 42 mj 2022
Wow thanks big time
thank you for this:)
Quite interesting with simple explanation tq maam and ur english is easily understandable
Thank you so much 🤍
Thank you❤
Thank you so much this video was easy to understand and will help decrease the anxiety I have for my bio test
Great vid
ty
This helped so much!! SO well explained, thank you 💛
Tomorrow I have an exam I was very stressed but big thanks for you its now easy
Nice!.❤
thank you so much! I passed my biology quiz with a score of 100%!! thank you for the well explained lesson!!!
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?
Great teaching thank you for your explanation i was having difficulty in this
Thank you so much ! I can understand everything clearly🥹
2 years later, thanks, the definition of this topic in my textbook is just confusing! thank you for this video, have a great day!
This helped so much!! SO well explained, thank you 💛
Beth Hope I’m so glad it was helpful!
You're right❤️❤️❤️
Thank you so much , it was really helpful
Thanks so much. I'm gonna pass my bio test tmwr because of you
Thank you do much. Please make more videos like this
Hello! You explained it super well. Do you have any video about DevCross?
i passed my bio test with a 10/10 thank you❤
very clear English language i am bilingual
Your voice is really mesmerising and thanx for this video❤❤
Y’all need to share this video, she deserves a million
exactly what everyone looks for.
Tanx we need more on medical genetics
thank you this helped me alot
So helpful, thank you!
Very well explained
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!
@@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.
❤
Thank you for this! 💚💛
nice u explained it very nicely
thank you Ms.Lantz!
One king Allah
What does this have to do with the test cross? Not related to biology.
nice explation sister
Thanks so so much, this is phenomenal
Thank you so much!
Thank u very much
Thhank you so much
Best explanation
Thank for such a nice explanation 😘😘😘
I am still watching your other video on genetics.😂
Simple:.and well explained..😇😊
Thank you! I hope it was helpful!
Nicole Lantz ..yes madam .. I'm studying principles of inheritance and it was helpful..! Mam are you teacher.?
@@siddardhavarma5092 Yes, I am!
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. :)
great thanks!!!
Can’t understand, thank u 👍
Great work
now this is a clear explanation.
thank you so much
I’m glad you found it helpful!
👍👍👍
Please upload chromosomal theory of inheritance
ib students???
All
May I ask? What is now the genotype of the yellow peas in the example?
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.
@@nicolelantz Thankyou for the respond Miss! I'm goin to explain this on my classmate for our next synchronous class this helps alot!
Nice explanation 👌