Our final meeting of 2022 was on the Friday 16th December.
Bob McEwen led a group colour blindness test.
Most people with colour vision deficiency have difficulty distinguishing between shades of red, yellow and green. This is known as “red-green” colour vision deficiency. It’s a common problem that affects around 1 in 12 men and 1 in 200 women. Almost in line with the national average 2 males in our group were shown to have this deficiency.

Bob explained how it is inherited through family genetics. Red-green colour blindness is a sex-linked trait and therefore encoded on the X chromosome. Because women have two X 🙁 XX) and can overcome the handicap of one, men have only one (XY) and are therefore more often affected.

Terry Hill then gave a brief update on the completion of NASA’s Artemis I mission — splashdown was in the Pacific Ocean last Sunday afternoon — this has set up the return of humanity to the Moon and is paving the way onwards to Mars.

The 2nd half of the meeting was a fun science based Christmas themed quiz hosted by the question setters and quiz masters David and Christine Vincent.

The time spent on the preparation of the interactive quiz with its audio and visual effects was much appreciated by the quizzers and we extend our thanks to David and Christine.

Next Meeting: Friday January 20th, 2023 at 10am at the John Godber Centre

David Rose

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