The Instigator
TheGhostofShadows12
Pro (for)
The Contender
Rooy
Con (against)

Should people be allowed to marry whoever they want, including family, cozens, sisters or brothers?

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Voting Style: Open Point System: 7 Point
Started: 3/12/2018 Category: Society
Updated: 3 years ago Status: Debating Period
Viewed: 452 times Debate No: 110597
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TheGhostofShadows12

Pro

I think people should be allowed to marry anyone they want including family members including brothers, sisters, cozens, mom or dad if divorced or single. True love is a thing that people feel that can't change. If someone loves someone and someone says that they can't marry that person then It's going to happen anyway because love bonds us all and that blood that is with us, love is a feeling that stays with us forever.
Rooy

Con

Good morning Ladies and Gentlemen, today I'm gonna explain why you SHOULD NOT marry whoever you want. This DOES NOT imply to Gay Marriage, different races or other things.

First of all, incest is morally wrong. Being in love and doing sexual relationships in an Incest relationship is wrong in a lot of cultures and is morally incorrect because they're your family! You can't do sexual things with them because there will be no respect whatsoever and it can affect relationships.

Second of all, it's genetically bad. Every person has 46 chromosomes and each chromosome holds a bunch of genes. Each gene has the directions for one small part of you. So there is a gene that determines if you"ll have red hair, one that gives color to your skin by making melanin, another one that helps blood to carry oxygen, and so on.

You actually have two sets of 23 chromosomes. One set of 23 comes from mom and the other 23 comes from dad. Since each set of chromosomes has the same set of genes*, this means that you have two copies of most every gene. What is important for making us each unique is that the copy you get from your mom can be very different than the copy you get from your dad.

So for example, the gene that causes red hair comes in a red version, and a not-red version (these different versions are called 'alleles'). And the gene that makes a pigment called melanin comes in a normal version that makes melanin and a broken one that doesn't. If you only have the broken one, you will end up with albinism.

Having two copies of everything is actually a really great system. This is because if one copy is broken, you still have a second copy to use as back up.

This is the case for the gene that makes melanin. People with just one broken copy don"t have albinism, because their good copy makes enough to keep albinism away.

But people with one bad gene copy can still pass it down to their kids. We call these people "carriers", because they carry a single copy, but don"t have the actual disease. And this is where the trouble can start with inbreeding.

If, for example, a woman is a carrier for a broken gene, then she has a 50% chance of passing down this broken version to her child. This doesn"t normally matter so much, because as long as she finds a father with two healthy copies, then their children will always be sure to get at least one healthy copy.
But with inbreeding, it is more likely that your spouse could carry the same broken gene. So in the example of albinism, it would mean that both mom and dad are carriers for the broken gene for making melanin. Then both mom and dad have a 50% chance of passing a broken gene to their child. This translates to each child having a 25% chance for getting the disease (0.5 x 0.5 = 0.25). That"s a pretty high risk!

Now, I"m not saying that people with albinism (or any rare disease for that matter), are always the result of inbreeding. Everyone has five or ten of these broken genes lurking in their DNA. This means it is always a roll of the dice when you pick a spouse as to whether they"ll carry the same broken genes as you do.

But with inbreeding, the risk that you"ll both carry the same bad genes is much higher. Each family is likely to have its own type of disease genes, and inbreeding is an opportunity for two carriers of the same broken gene to pass two copies of it to their children. And then their kid can end up with that disease.

Having diverse DNA is important for having a strong immune system. This is why inbreeding can make for some sickly children. And it is why laboratory mice and some farm animals get sick so easily.

The immune system depends on a very important part of DNA called the R32;MHC or Major Histocompatability Complex region. This is a lot of big words, but basically the MHC region is made up of a bunch of genes that help you fight off disease.

The MHC region"s secret to fighting off disease is to have as many different types of alleles (or versions of genes) as possible. The more variety you have, the better you are at fighting disease.R32;

Diversity is important because each MHC gene is good at fighting a different set of diseases. You can think of it like a lock-and-key system. Each disease is a different shaped lock, and each MHC gene is a key. The more keys you have, the more diseases you can unlock and destroy.

While this may sound very oversimplified, it is quite similar to how our bodies actually work. Our bodies are constantly trying to detect foreign material in the body. Scientists think that each MHC gene allows us to detect a different type of foreign material.

And even more importantly, each allele of an MHC gene can help detect a different type of foreign material. We don"t fully understand yet what types of foreign material each allele can help detect, but we do know that every unique allele helps to detect a different type.R32;R32;

Now I think you can see why inbreeding can cause problems here. When inbreeding happens and two closely related people have children, these children are likely to have less diversity in their DNA. Which means these inbred children would have fewer types of MHC alleles (or fewer keys).

With fewer types of MHC alleles, they can detect fewer types of foreign material (or locks). They will be more likely to get sick as they can"t successfully fight off as many diseases. The end result is a more sickly person.

As you can see, diversity is the most important thing lost with inbreeding. Whether it"s to ensure that you don"t get two bad alleles and end up with some rare genetic disease, or if it"s to ensure that you get many different MHC alleles, you need diversity to protect yourself.

These are my two reasons why you should not marry any member of your family and inbreed with them.
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