Cousins is too nebulous.
WHAT TYPE OF COUSIN?
First cousins is a Bad Idea.
Not always maybe but often enough they will both carry a hidden recessive. A friend of mine's parents were first cousins. All the kids were a bit weird but then the parents were odd even if they weren't first cousins. However they had eight kids. The last two were unconsionable as number five and six were both blind. Exactly the expected 25 percent ratio for a recessive gene. Which also means that is is likely that only two of the other eight aren't carrying the same nasty recessive gene.
Odds
Two blind - which was the result
Four with the bad gene
Two free of it.
No telling how many other problems carried over. The father was awfull. Cheapest SOB I have ever met. A neurosurgeon and he actually had his kidds living on peanut butter, bread and potatoes while he ate lobster. I am not kidding. A neurosurgeon and he married his first cousin. A neurosurgeon and he had more kids not only after one blind one but after two in row.
First cousins have a 25% genetic overlap not counting the fact that most human genes are the same in the first place. Second cousins have considerably better odds of not having problems. Third cousins are close to the same as marrying someone that is not at all related.
First cousins is a Bad Idea in general. At the very least get a genetic screening.
WHAT TYPE OF COUSIN?
First cousins is a Bad Idea.
Not always maybe but often enough they will both carry a hidden recessive. A friend of mine's parents were first cousins. All the kids were a bit weird but then the parents were odd even if they weren't first cousins. However they had eight kids. The last two were unconsionable as number five and six were both blind. Exactly the expected 25 percent ratio for a recessive gene. Which also means that is is likely that only two of the other eight aren't carrying the same nasty recessive gene.
Odds
Two blind - which was the result
Four with the bad gene
Two free of it.
No telling how many other problems carried over. The father was awfull. Cheapest SOB I have ever met. A neurosurgeon and he actually had his kidds living on peanut butter, bread and potatoes while he ate lobster. I am not kidding. A neurosurgeon and he married his first cousin. A neurosurgeon and he had more kids not only after one blind one but after two in row.
First cousins have a 25% genetic overlap not counting the fact that most human genes are the same in the first place. Second cousins have considerably better odds of not having problems. Third cousins are close to the same as marrying someone that is not at all related.
First cousins is a Bad Idea in general. At the very least get a genetic screening.
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