The gene is the physical, functional genetic unit that codes for a protein. The genotype is the specific type or version (allele) of the gene someone has.
my fourth video.. it's becoming clearer. at first i didn't understand why genes and alleles are distinguished.. now, i wonder how they are distinguished. everyone is saying an allele is a different form of the same gene.. so, what makes an allele a different form? what makes an allele dominate or recessive? if a trait has a specific sequence, it doesn't seem like the form can be different. for instance, if the ribosome takes a "atcg" from the mom and dad, how can a different form result? is it like alpha and beta glucose, where something is placed different? again, it seems that would result in a different trait if the sequence is fixed.
Lots of questions here… first about allele vs. gene - one GENE can have many possible versions, and the versions you get depend on what you inherit from your parents. Like did you get brown or blue or green alleles for the eye color gene? Did you get the alleles for free or attached ear lobes for the gene that controls type of ear lobe, etc. As for what makes it dominant or recessive, it depends on what effect the allele has. A brown eye allele results in darker pigmentation that will mask the blue eye allele, so the brown is dominant and the blue is recessive.
@@BiologyProfessor thank you, and sorry, i'm so slow. i was thinking genes are something completely different from alleles (two separate objects), but alleles are genes. when we receive one gene from one parent and another gene from the other parent, we use the term allele to convey the possibility of alternative forms (if both parents are homozygous dominant for a trait, we would still call the two genes alleles). it also seems there isn't just one sequence for traits. for instance, i read that eye color comes from multiple genes, not just one gene with a fixed code. i was thinking a trait's code was one fixed sequence, not that it could vary. the cause of dominance also seems to vary. one reason could be the amount of protein produced for that trait. or if all alleles need to be the same to produce a trait, but one is not the same/breaks, the broken trait will be dominant.
@@BiologyProfessor if you can i'd put a mic closer to you or use your iPhone or something in your pocket and add the sound after. alternatively you can purchase a nice mic that is either on your person. Part of it is where you are working (likely an empty study room or class room so it will echo, but having the iPhone in your pocket will likely help a lot.
No, base pairing is still followed. Heterozygous simply means the mutation is present one one homologous chromosome, and not the other. In other words, a person heterozygous for a mutation would receive that mutation from one parent, but receive an unmutated version from the other parent.
AUTOSOMAL means the gene is carried on a non-sex chromosome (so, on any of the chromosomes other than the X or Y chromosomes). Then the dominant and recessive pattern is the same as what I described here, but specifically for genes on an autosome (non-sex chromosome). Does this help? :)
@@BiologyProfessor millions of people all over the world are trying to lose weight but all effects are going vane, you should make a video on how to lose weight base on your story.
What's the difference between homozygote and homozygous?
"I desire to be your student and observe your every movement in the classroom."❤
Your videos help me so much! thank you!
Your teaching skills are very simplified and more beautiful about some difficult topics
sooper
Great. Thanks
thanks
THANK U VERY MUCH.THIS WAS REALLY HELPFUL.CAN U PLZ DISTINGUISH BETWEEN GENE AND GENOTYPE?
The gene is the physical, functional genetic unit that codes for a protein. The genotype is the specific type or version (allele) of the gene someone has.
Hi Hi. Professor.
Hi :)
my fourth video.. it's becoming clearer. at first i didn't understand why genes and alleles are distinguished.. now, i wonder how they are distinguished. everyone is saying an allele is a different form of the same gene.. so, what makes an allele a different form? what makes an allele dominate or recessive? if a trait has a specific sequence, it doesn't seem like the form can be different. for instance, if the ribosome takes a "atcg" from the mom and dad, how can a different form result? is it like alpha and beta glucose, where something is placed different? again, it seems that would result in a different trait if the sequence is fixed.
Lots of questions here… first about allele vs. gene - one GENE can have many possible versions, and the versions you get depend on what you inherit from your parents. Like did you get brown or blue or green alleles for the eye color gene? Did you get the alleles for free or attached ear lobes for the gene that controls type of ear lobe, etc. As for what makes it dominant or recessive, it depends on what effect the allele has. A brown eye allele results in darker pigmentation that will mask the blue eye allele, so the brown is dominant and the blue is recessive.
@@BiologyProfessor thank you, and sorry, i'm so slow. i was thinking genes are something completely different from alleles (two separate objects), but alleles are genes. when we receive one gene from one parent and another gene from the other parent, we use the term allele to convey the possibility of alternative forms (if both parents are homozygous dominant for a trait, we would still call the two genes alleles). it also seems there isn't just one sequence for traits. for instance, i read that eye color comes from multiple genes, not just one gene with a fixed code. i was thinking a trait's code was one fixed sequence, not that it could vary. the cause of dominance also seems to vary. one reason could be the amount of protein produced for that trait. or if all alleles need to be the same to produce a trait, but one is not the same/breaks, the broken trait will be dominant.
Yes, you are really understanding this well now!
sounds should be adjusted..
What's wrong with the sound? Too quiet or too much echo? I'm filming in a new place now and trying to tweak my audio quality.
little bit high echo .... overall sooper ....
@@BiologyProfessor if you can i'd put a mic closer to you or use your iPhone or something in your pocket and add the sound after. alternatively you can purchase a nice mic that is either on your person. Part of it is where you are working (likely an empty study room or class room so it will echo, but having the iPhone in your pocket will likely help a lot.
When a mutation is heterozygous, at the level of the DNA bases-is the AT GC base-pairing rule not followed-meaning AG TC can occur? Thanks in advance!
No, base pairing is still followed. Heterozygous simply means the mutation is present one one homologous chromosome, and not the other. In other words, a person heterozygous for a mutation would receive that mutation from one parent, but receive an unmutated version from the other parent.
can you make a video about what autosomal dominant & recessive plz 😊😊
AUTOSOMAL means the gene is carried on a non-sex chromosome (so, on any of the chromosomes other than the X or Y chromosomes). Then the dominant and recessive pattern is the same as what I described here, but specifically for genes on an autosome (non-sex chromosome). Does this help? :)
@@BiologyProfessor thx 🙏
Of course :)
6 year ago you were very obese but now you are very slim .How you losed weight please tell me the technique.
Keto + Fasting
@@BiologyProfessor thanks for your response
@@BiologyProfessor millions of people all over the world are trying to lose weight but all effects are going vane, you should make a video on how to lose weight base on your story.