For the Week Ending February 12, 2023.
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Chromosomal abnormalities often lead to nonviable embryos. A new theory contends that during egg formation, centromeres (a part of the chromosome) can “know” if they are going to get passed on through the egg or get thrown away. If they sense they’re about to be tossed, they try to join an egg they don’t belong in. If such an egg gets fertilized, the embryo is likely to die–but the centromere doesn’t care since it was going to get destroyed anyway. Read more here.
This is important for you because it seems like the logical conclusion to the idea of The Selfish Gene.
New fossil work suggests that ichthyosaurs–ancient, giant, dolphin-like reptiles–apparently bred in large groups at designated breeding grounds, just like contemporary whales do. Read more here.
This is important for you because this behavior was shown to be at least 230 million years old!
Moms in proteomics
Jennifer Geddes-McAlister founded Moms in Proteomics in 2021 to help mothers who are new faculty in the sciences connect with each other and help each other get through the challenges specific to their field. Now, it helps all scientists struggling to maintain a healthy work-life balance. Read more here.
This is important for you because “Mothers in science contend with unique challenges and demands on their time and energy. But funding agencies, administrators and even colleagues are often unaware or fail to recognize the impact of this hidden struggle.”
Social media baby etiquette
This grandma-to-be excitedly posted on Facebook that her son and daughter-in-law were (finally) expecting–without their knowledge or consent. Big no-no. Read more here.
This is important for you because good rule of thumb: it’s not ok to post about someone else’s kid.
The most popular article on The Pulse this week was The Pros and Cons of Having an IUD Inserted Straight After Delivery. Read it here.