00:01
In order to answer this question, let's talk about inheritance.
00:02
It says the vestigial gene in fruit flies can have a mutation that confers tiny, useless wings.
00:09
This phenotype is excessive to wild type wings.
00:12
So in this case, when you have, in this case, when you have the homozygous dominant like this, or the heterocygose like this, you're going to get normal wings, okay? and when you have the homocybinos excessive like this, you're going to get vestigial wings or tiny wings, okay? let's just leave it like tiny wings, tiny wings.
00:48
And it says the bestial gene is on chromosome 2.
00:51
And it says the gene hairy in fruit flies can have a mutation that compress a hairy body.
00:57
This phenotype is possessive to a wild type non -haity body.
01:00
So when you have the homocybo's dominant like this, or the heterocygote, what you're going to get, heary, the heresy phenotype, okay, and the homocyco excessive that is like this is going to give you non -hery body or practically normal, normal body, okay, this is hairy body.
01:30
And it says that the hairy gene is on chromosome 3, in fruit flies, the sex chromosome is on chromosome is in chromosome 4.
01:40
And it says a vestigial wing, a vestigial wing, it means like this, hairy male, it means homozygo excessive for this gene.
01:50
And hairy, a vestigial wing, hairy male, okay, so you have like this.
01:59
This is the genotype for the male is crossed with a wild type female homozygos at both genes.
02:06
It means, i'm sorry i did the mistake here.
02:10
In this case, this haiti body is excessive, okay? and this is normal body.
02:14
So this is normal body, this is hairy body.
02:19
So this is a double homocygous recessive like this.
02:22
And in this case, you're crossing a wild type female homozygous at both genes.
02:27
It means homozygous dominant here and homozygous dominant here.
02:31
And it says, this f1gn, well, you're going to cross this.
02:35
And remember that for this gene, this male parent only has which is diphalil and this parent only has dominant alil.
02:43
So all of the opulent are going to be heterocygous.
02:45
For this gene and the same for the h gene, hittor cycle like this, okay? this is the f1.
02:51
And it says, the f1 generation is cross to produce the f2 generation, which are the following are accurate expectations regarding the f1 and the f2 resulting from this cross.
03:00
They are asking us to build 4 by 4 panel squares.
03:05
In this case, this is your cross, okay, in order to get your f2.
03:10
Heterosai goes, because i'm not the heterozygos.
03:12
And you first have to find that gametes, and you're going to find that gametes, by mixing each of these alleles with each of these alleles.
03:18
And as both parents have the same genotype, then both of them are going to have the same damage.
03:22
In this case, you have the gametes for both parents are going to be like this, like this, like this, and like this.
03:43
And here you have the same gametes because both parents have the same genotype.
03:51
You have here the homozygos -lominent, homo -sigis -lominent, homo -sai -lominent, hetero -sigos, heterozygos, homozygos, dominant, and this, heterocylus, and heterocygles.
04:14
You get this, and this, you get homozygoyal dominant and homozyglociv and homozygoyles recessive.
04:32
Then you get here heterocybo and heterocygos, heterocygote, heterozygos again, and homozygoseous recessive.
04:43
In this case, you get heterocygoyles, and homocylus dominant, heterozygos, and heterocybocygos, homozygot decisive, and homozygoyles dominant, heterocyl silos with heterocylus, heterocylis, and homozygoyal recessive...