00:01
I'm not to answer this question, to talk about inheritance.
00:02
It says, practice with pedigree charts.
00:06
A man in human, his maternal grandfather, have a particular condition.
00:11
This man married a woman and had four children in the following order, boy, boy, great boy.
00:16
All the children of these magglers except the oldest boy had the condition.
00:21
The woman of this man was had a paternal grandfather that had a condition.
00:25
Only the above individuals have that condition, okay? so again, let's have this man here and this is or these are these man's parents.
00:40
Okay.
00:41
So this man has a condition and also this maternal grandfather, it means the father of her mother, maternal grandfather.
00:56
It says this man, margaret, a woman, and had one, two, three, and four children.
01:04
The following order.
01:05
Boy, boy.
01:08
I'm sorry, boys are squares, remember.
01:11
So you have boy, boy, girl, it says all the children of this marriage except the oldest boy had a condition.
01:22
So practically it says all the children of this marriage except the oldest boy, it means this boy here have the condition.
01:33
So all of them have that condition.
01:37
Then it says the woman of this marriage had a paternal grandfather.
01:40
Father, a paternal grandfather that had the condition.
01:46
Okay, so let's change this part here.
01:50
We're going to place that here.
01:54
This woman had a mother and a father.
01:59
And here, according to this, according to the information, it says that a paternal, okay, a paternal grandfather, father, it means this one here, this man here who had that condition.
02:22
Then it says, only the above individuals have the condition.
02:25
So particularly all of them have the condition.
02:27
These 1, 2, 3, 4, 5, and 6, these 6 people have the condition.
02:31
Then it says, draw a pedigree showing the above information and use appropriate pedigree symbols and while this is your pedigree.
02:40
Then it says, it's a condition dominant or recessive.
02:43
And this condition is recessive, right? why? well, because remember that in dominant diseases, you are either affected or unaffected.
02:51
While in recessive diseases, you can be also affected or unaffected, but those that are unaffected can be caggers.
02:58
Okay, it means they are caggers because even when they are healthy, they carry the mutagen and they can have offspring with the disease.
03:06
And this is what is happening here.
03:08
Okay? this man is affected, but both parents are unaffected.
03:13
It means that at least one of them should be a cagher for the disease.
03:16
Disease or for the mutagenalil and they are transmitting the mutagenalil to the song.
03:21
Okay? then it says, write genotypes for all individuals you can in the pedigree.
03:28
Now, is this pedigree exclaim recessive or autosomal excessive and it is very likely that there is autosomal recessive.
03:38
Okay? why? well, because in ex -ling recessive disorders there is no further to son transmission.
03:43
You can see here there is father to son transmission.
03:45
So this is not ex -ling excessive but auto -tomal recessive.
03:48
It is more likely that means a somber decisive.
03:51
So the answer is a genotype for all individuals you can in the pedigree.
03:55
So assuming this pedigris is a controsomal recessive and it's the following allele, the a allele.
04:00
So when you have homozygous dominole, regittorzygos, you're going to be healthy and when you have the homozyglysis you're going to have the disease...