00:01
Not only to answer this question, let's talk about cell division.
00:05
It says, which of the following statements is true? it says each chromosome, well, let's look at option a.
00:13
Each chromosome is composed of two sister chromatids.
00:17
Well, this may be true or not because remember that your chromosomes are like this.
00:21
But when they enter cell division, dna application occurs and they become like this.
00:27
And you have here one chromatil, and this is another chromosome.
00:32
As they are joined by the same centromere, they are called sister chromatids.
00:38
So let's move to option b.
00:41
Option b says during prophix 1 chromosomes pair up through a process called synapsis.
00:48
And this is true, okay, because during prophix 1, if this is one chromosome and this is homologous pair, they are going to pair like this.
01:00
And this process here is called synapse.
01:04
Statement c or option c says the maternal and paternal chromosomes in a homologous pair have the same genes at the same loxite but different but possibly different alleles.
01:15
So this is also true...