May 15, 2020 in Tutoring
Genetic Diversity and Variation
This article is directed at students studying Level 3 BTEC Science or Advanced Level Biology and looking to book lessons.
How do I fix a marriage after cheating??
My husband of 5 years has cheated on me. I'm heartbroken. Can I fix our marriage?? Is there hope for us?? Will things get better? Please help
We both have insecurities and trust issues due to past relationships... So, there's the back and forth accusations, yelling, name calling, etc. We are both extremely jealous and have no communication skills. We love each other but sometimes Love isn't enough to make someone understand that you aren't going to hurt them. How can we help each other overcome these issues?
Am I over reacting? Am I the one in the wrong no him
Ok I've been with my boyfriend for 3 years now and he denied cheating on me but everything points to the opposite he's gone to spend the night with his baby moma and her kids in a hotel he rated me put to her when I called the cops on her for her vandalizing my car he would defend her when I would bring thing up about her and he has a video of her playing with her self am I wrong for being mad?
Idk what to do
My boyfriend and I have been fighting because he found some old messages that I had when we started going out, the messages are not bad the conversations where just like hi and bye kind of thing but because I told him I wasn't talking to anyone he's mad but da whole time he was still hanging out with his baby momma behind my back and he would delete all his messages to her so I wouldn't see them
Lost and confused at a crossroads
My boyfriend and I have been together for seven years now. We have had a very tumultuous relationship both of us have hurt each other very much on each parts. But he’s done a lot more wrong it has no accountability. But my question is how do you handle it because anytime I try to talk to him about anything he automatically yells at me, deflects, accuse me of cheating. How do you go about handling
How can I get my teen to confide in me
I've been trying to get my son to confide in me about why he is feeling so depressed. He is 15 years old and a very good teen but have no idea why he is so withdrawn and quiet. Please help me I cant bear to see him like this
What do I do?
I'm not sure what to do. Recently separated mom with 2 young girls and pregnant with my 3rd.
I took my son's Ipad away because I'm at my wit's end with him.
He is so addicted and doesn’t want to do anything else. Can anyone tell me whether I did the right thing or am I being too harsh?
It's 3 y I divorced and we have shared custody of 2 lovely kids. Any advice on how to make them understand that divorced parents is ok?
What should I do?
My son is acting out in school and giving people the middle finger and running around and hitting when he is restrained and he also has speech apraxia and may have ADHD
This article is part of the lesson structure for studying genetic diversity in plants and animals through meiosis. In animals meiosis takes place in the gonads for males and in the ovaries for females. In flowering plants meiosis takes place in the anthers and in the ovules. There are plenty of places where genetic diversity can be introduced during meiosis. There is a duplication step where genetic material is duplicated or doubled before the cell can divide. Two types of duplication errors can occur that can lead to new proteins being produced, these are Substitution errors or deletion errors . Substitution errors lead to a new DNA base being replaced by a different base that may or may not lead to a new protein being formed. If the new protein is beneficial this will be passed on to future generations. If the new protein is detrimental it will usually be 'dropped out' and not continue for future generations.
Another area where genetic diversity can be introduced is after the duplication step where homologous pairs of chromosomes comes into close contact and can touch against each other so that the leg of one chromosome can get exchanged for the leg of it's homologous pair. This process is called 'crossing over' and increases the possibility for genetic diversity.
To get a whole picture for the range of ways where Meiosis can produce genetic diversity book an online lesson today. Thank you for taking the time to read this brief article.