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Question 24 2 pts Why are processes that reduce within-population genetic variation often a problem for a population in the long run? HTML Editora B := I V A Da - A - Ix E NVX G 3 3 @ 3 x J x 12pt E - O Paragraph - @ O words Question 25 2 pts How are bottlenecks and founder effects similar and how are they different in how they occur AND how they affect populations and their genetic diversity?

Answer 1

small populations lose genetic variability because of genetic drift and inbreeding withinpopulations can further decrease individual variability.Inbreeding leads to higher mortality,lower fecundity,reduced mating ability,slower growth,developmental instability,more frequent developmental defects,greater suspectability to disease,lowered ability to withstand stress,and reduced intra and inter specific competitive ability.

25. Population bottlenecks occur when a population size is reduced for at least one generation while foundereffects occurs when new colony started by few members of original population.In both cases genetic variation is reduced.In bottlenecks population may not be able to adapt to new selection pressures such as climatic change or a shift in available resources.The founder effects is easy to recognize in genetic diseases,the frequencies of all sorts of genes are affected by founder effects.