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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Tracking time of marker entry generates a chromosome map
Both the top and bottom pattern have the same frequency. However, the amount of on-time varies.
Rubella rash in a young child. Rubella is also called 3-day measles or German measles.
Radiative forcing expresses change in energy input over time
The frequency of aneuploidy changes dramatically over developmental time. Between 6 to 8 weeks and 2