If the frequency of human birth weights were subject to evolution by natural selection, what phenotype(s) would selection be acting against given the observed pattern of neonatal mortality? What kind of selection is this?
If the frequency of human birth weights were subject to evolution by natural selection, what
Ans- Stabilisation Natural Selection.
The Hardy-Weinberg Equilibrium Principle states that the genetic variation in a population will remain constant from one generation to a subsequent generation unless it is interrupted by disturbing factors. Disturbing factors include Natural selection, Mutation, non-random mating, genetic flow, and genetic drift.
Thus, Natural selection is the process in which heritable variations enabling better survival are enabled to reproduce and leave a vast number of progenies. Moreover, the variation is due to recombination at the time of gametogenesis, or due to genetic drift or gene flow resulting in the change in the frequency for the next generation. As such Natural selection can be three types for a population i.e. Stabilisation, Directional change, and Disruption Change.
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