Live data from Hacker News

Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

quantamagazine.org

41–50 of 62 posts

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#41

Earlier quoted context omitted.

Just met an airbnb host with the exact same story. Tried for years then broke up - both had kids right away with their new partners

And a miscarriage is the egg doing a "Oops. Got that one wrong"?

DNA damage usually I think.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#42

Earlier quoted context omitted.

I thought that partner incompatibility was extremely common?

Just incompatibility, without the partner. Fluids pH problems are much more common than you'd think, and it has nothing to do with the partner (besides being treatable). And it's just one of the many problems that may occur, but none of them is like a partner issue because your bodies don't "match".

Yes. But if the egg is making a decision can't other parts of the process, at least in theory, be serving as gate keepers as well? Thst is, it's not just the egg being selective. Selective is baked into the recieving organism (i.e., the human female).

To me that doesn't sound too far fetched and to some extent makes perfect sense.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#43
post #31

Earlier quoted context omitted.

And a miscarriage is the egg doing a "Oops. Got that one wrong"?

You cannot throw this kind of jokes around given how this subject can be hard to read for people to which it happened. HN is a community with people of lot of different backgrounds so it's important to be careful.

I apologize. It wasn't a joke per se. Just a simple / casual way of getting the point across. My context was biology, not couples reproduction.

None the less, sorry about that.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#44
post #31

Earlier quoted context omitted.

And a miscarriage is the egg doing a "Oops. Got that one wrong"?

You cannot throw this kind of jokes around given how this subject can be hard to read for people to which it happened. HN is a community with people of lot of different backgrounds so it's important to be careful.

Apology aside, I'd like to add, I was also trying to suggest (perhaps poorly) there are times (e.g., miscarriage) when Mother Nature is actually do a positive. That is, it realizes something is off target.

Mind you, I get the couple is often guttes. But emotions aside, it's a biological positive.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#47

This probably answers a question I have about genetics - that there just isn't enough variety if reproduction was random. Genetic differences that have no bearing on survivability, like skin patterns or colors or whatever, should be widespread through every species, but they're not.

Skin patterns and colors do have impacts on survivability! Some species use camouflage to avoid predation, others use bright coloration to attract mates.

There's also a flaw in your premise -- reproduction is not random, it's subject to selection at a number of levels. Most selective forces act to reduce genetic diversity, both at the selected gene, and at nearby genes.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#48
post #38

This probably answers a question I have about genetics - that there just isn't enough variety if reproduction was random. Genetic differences that have no bearing on survivability, like skin patterns or colors or whatever, should be widespread through every species, but they're not.

That's really interesting to think about. Somewhat related, I asked a geneticist once why there was so much diversity in humans vs pigeons which all looked the same to me. He said, "We're tuned to notice differences between people, not pigeons. Perhaps we all look the same to them!" Perhaps there is precisely this sort of random variation in the differences we don't notice, because by being oblivious to them they are…

If anything, humans have abnormally _small_ genetic diversity; most species have more. We went through a population trap at some point in the past, and nearly went extinct; we probably lost most of our diversity then.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#49
post #31

Earlier quoted context omitted.

And a miscarriage is the egg doing a "Oops. Got that one wrong"?

You cannot throw this kind of jokes around given how this subject can be hard to read for people to which it happened. HN is a community with people of lot of different backgrounds so it's important to be careful.

I've talked to people who have miscarried, and the parent post is actually a fine, lighthearted summary of the most reassuring conclusion that they came to: there was something off genetically and the potential child would have had severe health issues. I don't think it's out of place or off color in a discussion of conception.

Re: Choosy Eggs May Pick Sperm for Their Genes, Defying Mendel’s Law

#50
post #31

Earlier quoted context omitted.

You cannot throw this kind of jokes around given how this subject can be hard to read for people to which it happened. HN is a community with people of lot of different backgrounds so it's important to be careful.

I've talked to people who have miscarried, and the parent post is actually a fine, lighthearted summary of the most reassuring conclusion that they came to: there was something off genetically and the potential child would have had severe health issues. I don't think it's out of place or off color in a discussion of conception.

That's quite the generalization you're making. It doesn't apply nearly to all people, especially for couples who miscarry at a very late stage in the pregnancy.

A friend of mine to who had the misfortune of this happening to him described it as the "worst thing he could ever image happening to a person" - they were mentally broken for months. So I wouldn't say this is a lighthearted comment to make, especially if you said it to them face-to-face.

Post reply on HN