Homosexuality and evolution

I made the mistake of reading some of the comments on those last youtube videos. There were some good ones, but they were also laced with the usual grunting assholes complaining about gays and “trannies” and quoting the Bible and making racist remarks about Africans. Let us pass over those contemptible arguments; there’s no dealing with them rationally. Spit and move on.

But there’s another flavor of argument that annoys me to no end: people who cite science and evolution to support their ignorant misconceptions about human nature. I want to address two, one anti-gay and the other pro-gay, both wrong.

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Oh, dear

The context of this graph isn’t entirely clear, but it’s from Jeffrey Ross-Ibarra of UC Davis, and it’s from a poll of 800 first year students, so I presume it’s the results of a survey of their incoming class?

interests

Maybe one of the things we need to do as part of popularizing science to the general public is to emphasize the diversity of life, and talk more about the cool things plants and bacteria and fungi and so forth do. I know I started out as a zoologist, am still mostly focused on animal development, but over the years I’ve become increasingly aware that there are amazing contrasts to be studied. We might wish we could study aliens from Mars, but every time I look at plant development, for instance, I feel like I’m examining extraterrestrials already.

Developmental plasticity is not Lamarckism

Sometimes, people email me with good questions. Here’s one.

When I was a kid, my own visualization of evolution was Lamarckism.

But I didn’t know it. In reading Dawkins and others, I know it doesn’t exist. But it seems this article is claiming it does to some extent. Can you comment? I’m curious as to the current consensus as I’ve been reading a lot about genes that can be turned on and passed to offspring. Can you take a look?

This is a fairly common question. Looked at naively, developmental plasticity seems to be Lamarckian — we’re talking about organisms responding with morphological changes to their environment, just like Lamarck’s example of the giraffe stretching its neck. But that’s only the first step; the transmission of a distribution of traits to the next generation is purely Darwinian.

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Crusaders against GMOs

The New Yorker has a fascinating article on Vandana Shiva, a crusader against GMO crops. I’d never heard of her before, but apparently she has charisma and cult-like followers who hang on her every word, and her word is a rather religious opposition to scientific agriculture. Weirdly, I can agree with some of it.

At each stop, Shiva delivered a message that she has honed for nearly three decades: by engineering, patenting, and transforming seeds into costly packets of intellectual property, multinational corporations such as Monsanto, with considerable assistance from the World Bank, the World Trade Organization, the United States government, and even philanthropies like the Bill and Melinda Gates Foundation, are attempting to impose “food totalitarianism” on the world. She describes the fight against agricultural biotechnology as a global war against a few giant seed companies on behalf of the billions of farmers who depend on what they themselves grow to survive.

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