Download SI Worksheet 18 - population genetics

Population Genetics
Fill in the blank with the correct answer from the list of on the right. Some terms
can be used more then once or not at all.
1. A ______________ is a population or group of populations whose members
can
interbreed and produce fertile offspring.
2. Offspring of sexual reproduction are genetically different from their parents
and from each other because of __________________,
______________________, _____________________
3. Sexual _________________ is the distinction in appearance between males
•
•
•
•
•
•
•
•
•
•
population
mutation
selection
fertilization
genes
dimorphism
natural selection
crossing over
heredity
independent
assortment
and females of a species
4. Sexual _________________ determines “who mates with whom”
5. ________________ is a source of genetic variation
6. __________________________ can alter variation in a population in three
ways
7. ________________ occurs as heritable variations are exposed to environmental factors that
favor the reproductive success of some individuals over others.
8. The unit of evolution is ____________________
9. The mechanism of evolution is _____________________
10.___________________ selection favors intermediated phenotypes
11.___________________ selection favors individuals at both extremes of the phenotypic
range
12.___________________ selection acts against individuals at one of the phenotypic extremes
Short answers
What are the different factors effecting outcome of evolution ?
What is genetic drift?
Population Genetics
What is the Hardy-Weinberg equilibrium ( write out the two equations)?
What are the conditions that must be met for Hardy-Weinberg Equilibrium?
What are the Evidence of Evolution discussed in class ?