00:01
To answer this question, let's talk about inheritance.
00:03
It says, what are the possible blood types of the offspring of a cross between individuals that are type b and type o? remember that for type a, you have that this is type a, the homocygose dominant, or the heterocygose a -o, this is type a.
00:19
The same for b.
00:21
The homocygousygotechot or the heterocygose -v -o is going to call for type b blood.
00:26
When you have type a -b, you only have this possibility.
00:30
It is type ab blood.
00:32
And finally, the homocycle recessive is going to be type o.
00:37
So in this case, you have a cross between an ab and an o.
00:42
So you have this funny square that is like this.
00:47
You have a, a, b, and b.
00:56
Okay, so the possible off -pring from this cross are going to be, i want to have either type a blood or type b blood.
01:04
The next question says, suppose a father of blood type a type a, and a mother of blood type b have a child of type o.
01:11
What blood types are possible in their subsequent children? so, you have here the child that is type o.
01:20
Okay, how was i? okay, how was i? okay.
01:21
Remember that a person inherits one allele from each parent.
01:24
In this case, the child here has two o alleles.
01:29
It means that one o allil came from, the father and one o.
01:33
Allul came from the mother.
01:34
So both of them have at least one o allil.
01:38
And as it says that one of them, or well the father has type a blood and the model has type b blood, then it means that the father is heterocycles for a and the model is hetero cycles for b.
01:56
And then you make up your panel square here and you get ab.
02:06
This is b -o -a -o -o -n -o.
02:11
So practically the possible offering from this cross, a -o -o -o -o -o, or the subsequent children from this couple are going to have the blood types ab, b, a, and o.
02:22
It means practically like all the types of blood.
02:27
The next question says, suppose a father and mother claim that they have been given the ground baby at the hospital, both parents are blood type a.
02:37
So you have this gyotype for both parents.
02:39
You don't know if they are homozygous dominant or heterocybo.
02:42
So just we're going to represent that like this.
02:45
Then it says, the baby they have been given is blood type o.
02:49
It means the baby is like, oh, like this.
02:52
This is the only possibility for type o.
02:54
It says, do they have the wrong baby or are they just ignorant of how blood type is inherited? and the answer is that they are just ignorant of how blood type is inherited.
03:04
Because as i told you in the previous question, a person inherits one allele from each parent.
03:09
In this case, this baby here has two overlays.
03:12
So 1 -0 comes from one parent and the second o comes from the second parent.
03:19
In this case, both parents apparently were or are heterocygoyles for a, and both of them transmitted the ovale to this baby, and hence this baby has type o blood.
03:33
Okay, so this is true.
03:36
The next question says, yellow guinea pigs cross with white ones, always produce cream colored offspring a two cream colored guinea pigs when cross produce yellow cream and white off bring in the beauty of one yellow two cream one white how are these colors inherited so in this case it says let's suppose that this is the yellow allele and this is the white alil okay when you have the homocycles for white you have yellow when you have the homozygot for w you get white and when you get the heterocygose your game cream okay because it says here that a yellow guinea pigs when crossed with white always produce cream because in a cross between a yellow with a white guinea pig you're going to produce that all that hit all the f1 are going to be heterozygos and this is cream okay then then two cream color guinea pigs when cross produced well in this case you have this cross okay i'm just going to make up a square it is not required but just for you to see that from a cream cross with a noir cream, you're going to get white, you're going to get cream, you're going to get also yellow.
05:00
Okay? so it says, how are these colors inherited? so apparently here, as you can see here, the homocygous produces yellow, the homozygoy and the homozygous for white, and the homozygous for w produces white.
05:11
But in this case, the heterocygoy is producing a blend between yellow and white.
05:17
That is cream in this case.
05:18
Okay, so when you have the hemocygouser, that the heterocygous produces a third phenotype.
05:23
This is a case of incomplete dominance.
05:32
So this is the answer for this question, okay? the next question says, it says if the gym for tall plants wasn't completely dominant over the gym for short plants, what would be the result of crossing two heterozygous plants? so you have this.
05:51
You have the following course.
05:58
Most tigers dominant, heterozygose, heterocygous, and homocygosegous.
06:02
So it says that in this case you have a case of incomplete dominance.
06:07
It means the homocygous for t or for dominant is going to be tall.
06:12
The homozygog excessive is short and the heterocygo is going to be a blend between tall and short.
06:17
That is going to be medium size, okay? so in this case, the heterocygose is not going to code for that dominant or for the tall phenotype, but for a third phenotype that is medium sized plants.
06:30
So in this case you have that the phenotype is a weight.
06:32
Is going to be one tall, one and two medium sized, and one that is short.
06:41
So this is your phenotyping ratio.
06:43
And next question says, in labrador retrievers code color is determined by the pigment protein melanin, black is dominant to brown.
06:50
So when you have here, the homozygous dominoid or the heterocygose you're going to produce black, and when you have the homozygo excessive, you're going to produce brown, okay? then it says, however, the epistolic allele must be present in order for the melanin to be deposited in the hair shaft.
07:11
If the dog has a homocyro -resensive genotype for the a -gene, for the e -g gene, i'm sorry, when this happens, you're not going to care about this gene anymore.
07:22
Okay, when you have the homozygissive, it doesn't matter which genotype you have for the vigene because you're directly going to produce yellow.
07:30
And if you want to produce either black or brown, you must have either the homo -sigemone or the heterocyg for the e -g.
07:38
Okay, now it says, determine the phenotypes of the puppies or the following cross.
07:43
You have two yellow labs that are heterocylus for the be gene.
07:46
So you have two yellow, i'm sorry, this is two yellow labs, okay, two yellow labs.
07:56
Yellow is homozylo -decessive, okay? this is your cross and it says that are hydrocygos for the beijing.
08:03
So this is like this...