ANTH Ch 4
Terms in this set (20)
A change in allele frequencies from one generation to the next is an example of evolution.
A population has two alleles for a given gene, D and d. If the frequency of the dominant allele is 0.45 and the frequency of the recessive allele is 0.55, what will the frequency be for the recessive homozygote genotype?
Compared to the normal male karyotype, what does a man affected by Klinefelter's syndrome have?
One more X Chromosome
Huntington's chorea is a genetically linked, debilitating, degenerative disorder with an onset usually after the fourth decade of life. What is the reason why this disease has not been eliminated through natural selection and is actually quite prevalent among communities in Lake Maracaibo, Venezuela?
The onset of the disease after prime childbearing years means it is largely unaffected by natural selection.
Members of a population that can breed and produce viable offspring are considered to be of the same
Mutation is the only source of new genetic material.
he different appearance of these two moths illustrates a change in _____________ caused by _______________.
Phenotype: directional selection
The gene pool includes only the beneficial traits in a population
The key factor for the amount of gene flow occurring between two populations is physical distance.
These long, thin blood cells confer protection against anemia.
This diagram represents the founder effect, that is, when a population moves into a new area and becomes reproductively isolated.
This figure shows significant genetic change in horses over millions of years. What is another name for this type of change?
What are the three patterns of natural selection?
stabilizing, directional, and disruptive
What are the two main types of mutations?
What does the case of the peppered moth and industrial melanism during the Industrial Revolution in England illustrate?
a change in frequency of the nonmelanic genotype
What does the coloring of this alligator represent?
What is another name for a reproductive population?
What is the genotype that confers protection against malaria while allowing an individual to survive and reproduce?
What is the name for populations in which reproduction within the group is encouraged?
Which of the following abnormalities is linked to malaria?