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#sexdetermination

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michael<p>Let me tell you 'bout the birds and the bees and the octopuses: </p><p>3-Feb-2025<br><a href="https://mastodon.social/tags/Octopuses" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Octopuses</span></a> have some of the oldest known <a href="https://mastodon.social/tags/sexChromosomes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sexChromosomes</span></a><br>New research at the UO shows they’ve been using one that’s been around for 480 million years</p><p><a href="https://www.eurekalert.org/news-releases/1072206" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">eurekalert.org/news-releases/1</span><span class="invisible">072206</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/evolution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>evolution</span></a> <a href="https://mastodon.social/tags/chromosomes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>chromosomes</span></a> <a href="https://mastodon.social/tags/genome" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>genome</span></a> <a href="https://mastodon.social/tags/sexDetermination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sexDetermination</span></a> <a href="https://mastodon.social/tags/cephalopods" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cephalopods</span></a></p>
Lukas VFN 🇪🇺<p>Call of the Mole Vole <a href="https://synapsida.blogspot.com/2025/02/call-of-mole-vole.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">synapsida.blogspot.com/2025/02</span><span class="invisible">/call-of-mole-vole.html</span></a></p><p>"There are over 170 recognised species of vole... And then, there are the <a href="https://scholar.social/tags/MoleVoles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MoleVoles</span></a>... most (but not all) mole vole species lack a Y chromosome. In these species, the males have exactly the same XX karyotype that females do... As of 2025, we have no clue as to how <a href="https://scholar.social/tags/SexDetermination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SexDetermination</span></a> works in these species." </p><p><a href="https://scholar.social/tags/Animals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Animals</span></a> <a href="https://scholar.social/tags/Mammals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mammals</span></a> <a href="https://scholar.social/tags/Genetics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Genetics</span></a></p>
Lukas VFN 🇪🇺<p>Genetic mechanism of alternating sexes in <a href="https://scholar.social/tags/walnut" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>walnut</span></a> <a href="https://scholar.social/tags/trees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>trees</span></a> has some parallels to <a href="https://scholar.social/tags/SexDetermination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SexDetermination</span></a> in humans <a href="https://phys.org/news/2025-01-genetic-mechanism-alternating-sexes-walnut.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">phys.org/news/2025-01-genetic-</span><span class="invisible">mechanism-alternating-sexes-walnut.html</span></a></p><p>Ancient structural variants control sex-specific <a href="https://scholar.social/tags/flowering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flowering</span></a> time morphs in <a href="https://scholar.social/tags/walnuts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>walnuts</span></a> and <a href="https://scholar.social/tags/hickories" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hickories</span></a> <a href="https://www.science.org/doi/10.1126/science.ado5578" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">science.org/doi/10.1126/scienc</span><span class="invisible">e.ado5578</span></a></p><p>"A walnut <a href="https://scholar.social/tags/tree" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tree</span></a> produces <a href="https://scholar.social/tags/flowers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flowers</span></a> of one sex, then the other in the same season, but trees differ in which one comes first. Individual trees are consistently male-first or female-first in flowering."</p>
michael<p>8-Jan-2025</p><p>A nearly gapless <a href="https://mastodon.social/tags/genome" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>genome</span></a> sequence of the <a href="https://mastodon.social/tags/echidna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>echidna</span></a>, an egg-laying mammal with multiple <a href="https://mastodon.social/tags/sexChromosomes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sexChromosomes</span></a>, helps researchers to track genomic reorganization events that gave rise to a highly unusual <a href="https://mastodon.social/tags/sexDetermination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sexDetermination</span></a> system.</p><p>related to the system of the <a href="https://mastodon.social/tags/platypus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>platypus</span></a> which was the cover story in my book "Der Kuss des Schnabeltiers" / "The birds, the bees, and the platypuses." 15 years later I can't remember how that worked but I loved the story. </p><p><a href="https://www.eurekalert.org/news-releases/1069499" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">eurekalert.org/news-releases/1</span><span class="invisible">069499</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a></p>
michael<p>2-Jan-2025<br>Genetics of alternating sexes in <a href="https://mastodon.social/tags/walnuts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>walnuts</span></a></p><p><a href="https://www.eurekalert.org/news-releases/1069346" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">eurekalert.org/news-releases/1</span><span class="invisible">069346</span></a> <a href="https://mastodon.social/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>science</span></a> <a href="https://mastodon.social/tags/plants" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>plants</span></a> <a href="https://mastodon.social/tags/SexDetermination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SexDetermination</span></a></p>
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