Recent comments in /f/explainlikeimfive

explainlikeimfive-ModTeam t1_j6l6kjq wrote

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explainlikeimfive-ModTeam t1_j6l6hpr wrote

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1

HauntedBiFlies t1_j6l5uvj wrote

There are actually a few different mechanisms for a trait to be dominant vs recessive.

When an allele causes loss of function of the protein it makes, that’s often a sign that it will be recessive. For example, brown eyes are dominant to blue eyes, because the allele for brown eyes makes a brown pigment in the iris of your eye, while the blue allele simply doesn’t make the brown pigment (there isn’t a blue pigment, blue eye colour comes from the structure of the eye and the blood vessels running through it, like the veins of a pale skinned person). In this case, the recessive blue phenotype is simply an absence of pigment, so it can easily be masked by one copy of the brown allele, making the pigment. You’d need two blue alleles to have blue eyes, but one brown allele will do.

Other times, it’s a bit more complicated. For some genes, “dose” or number of copies is important, making an allele that has a product effectively recessive to the loss-of-function mutation because not enough of the product can be made from only one copy. There are also cases of codominance and incomplete dominance.

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Salindurthas t1_j6l5p30 wrote

Normally your brain and nervous-system activate your muscles.

External sources of electricity also will activate your muscles, even if your brain doesn't want to.

Generally the electricity tends to 'tell' all your muscles to tense up.

Your 'close hand' muscles are stronger than your 'open hand' muscles, so they'll win this fight and 'succeed' in closing your hand.

Your brain has no say, really, because any orders it gives are overpowered by the external source of electricity.

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shaneknysh t1_j6l5l5t wrote

I'm sure your restaurant is thriving. While working as a delivery driver, the restaurant owners and managers I talked to none liked the delivery apps. Some used it because they didn't have delivery otherwise but it dropped their margins to 2% or worse. Others used the delivery services because they saw a drop in orders to Skip and Uber Eats. They couldn't drop in house delivery or they would lose call in and direct orders that earned more. Now they had 3 competing delivery services and Skip and Uber out bid them for online advertising for their own restaurants.

But the next time I talk to them I'll pass on your advice. I'm certain raising prices or charging for delivery has never occurred to them.

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breckenridgeback t1_j6l5e79 wrote

> After how long, would you say? Weeks, months, years?

Well, empirically, I notice it after a few weeks and have mostly reset after a few months, but this is deeper than my knowledge goes. (The rates probably vary by a lot of factors, like sex and age among others.)

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ignotusvir t1_j6l3pst wrote

At its core, genes & DNA are blueprints for the assembly of proteins. Some proteins (often catalysts) are significant enough that their presence/absence will have an effect on the phenotype. Whether you have 1 or 2 working copies of those blueprints, they're enough to cause this dominance effect.

Keep in mind that most genetics is a bit more involved than 1 pair of genes broken down into binary pairs, but that's the brief mechanism

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