Two true breeding stocks of pea plants are crossed one...

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F1 individuals have red, axial flowers. The genes for flower color and location assort independently. If 1,000 F2 offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers? A) 65 B) 190 C) 250 D) 565 E) 750

Transcript

00:01 Okay, i want to answer this question with about inheritance.

00:03 It says two true -breeding stocks of bee plants are crossed.

00:08 One parent has red axle flowers and the other has white terminal flowers.

00:12 All f -1 individuals have great -axil flowers.

00:15 So remember that it says that you're crossing two true -breeding stuff of pea plants.

00:22 Okay, so for example, i suppose you have here a, this is a true breeding because remember the true breeding is the same as homocybulose, okay? and you have the second organism that it is also true breeding, so it's going to be b -b.

00:38 So it says that you cross these two patterns, okay? and you're going to get, well, first it says that this parent here has red axial flowers.

00:49 And the other one has white in terms of flowers.

00:53 So practically you have two genes here.

00:55 You have the color gene and also that location gene.

00:58 So this is bad.

00:59 This is not like this.

01:00 It is something like this.

01:01 Okay, let's change the names for the alleles, okay? let's say it's going to be, a, a, and b, because it is a groupwritten implant.

01:10 And here i'm going to have c, c, and d.

01:12 Okay.

01:12 So this is the same being, this with this, and this with this, but we don't know which one is dominant over the other one, okay? so it says that you ghosten, this, let's suppose that a is for great and the dominant, or well, this b is going to be for axial.

01:33 And then this is going to be white and this is going to be terminal flowers.

01:39 So you cross them and they're going to get, well, as they are homocyles, the only possibility here for you is going to be ac and bd.

01:50 Okay, this is going to be the only possibility for the f1, the only genotype for the f1.

01:56 But it says that all f1 individuals have great axial flowers.

01:59 So you have here the axial allele or well, i'm sorry, this is the great allele and this is the wide allele according to this, okay? this is the great allele and this is the white allele.

02:09 But it says that all the f1 have great.

02:12 It means even when you have the white allele, the great is dominating over this c.

02:16 So practically it means that a is dominant over c.

02:20 And also it says that all the f1 have axial flowers.

02:24 So you have here the axial allele and also the terminal allele.

02:28 So even when you have a terminal allele...