ATAR Notes: Forum

HSC Stuff => HSC Science Stuff => HSC Subjects + Help => HSC Biology => Topic started by: fishbiscuit on July 31, 2018, 04:34:36 pm

Title: Understanding Meiosis and Mendel's Laws - HELP ASAP
Post by: fishbiscuit on July 31, 2018, 04:34:36 pm

Hello,
I just need some confirmation with some of my knowledge.

Is independent assortment the alignment of chromosomes before crossing over?
And random segregation occurs after crossing over, in second division and involves the separation of chromosomes to form gametes.

Title: Re: Understanding Meiosis and Mendel's Laws - HELP ASAP
Post by: AngelWings on August 03, 2018, 05:37:49 pm

Quote from: fishbiscuit on July 31, 2018, 04:34:36 pm

Is independent assortment the alignment of chromosomes before crossing over?

Hmmm.... not quite. It's more like how different genes are inherited independently of each other. Perhaps the best explanation I can find quickly is from Khan Academy. What you described sounds like what happens in early meiosis.

Quote from: fishbiscuit on July 31, 2018, 04:34:36 pm

And random segregation occurs after crossing over, in second division and involves the separation of chromosomes to form gametes.

Really close. Random segregation can occur earlier than the second division of meiosis (I assumed that's what you meant). You may find these three explanations for you at Thought Co. (very brief), here and Khan Academy helpful.Please note I rushed this answer so I might be wrong. Take with a grain of salt.