Although there are 3 alleles for blood type in a population, each of us have only______ sets of chromosomes.

A population in which consanguinity is practiced is an example of random mating.

A population in which consanguinity is practiced is an example of :

 Afrikaner population of Dutch settlers in South Africa is descended mainly from a few colonists. Today, the Afrikaner population has an unusually high frequency of the gene that causes Huntington’s disease, because those original Dutch colonists just happened to carry that gene with unusually high frequency. This is an example of 

The risk of recurrence of a trait based on known incidence in a population refers to

Epistasis is the interaction between two or more genes to control a single phenotype.

BONUS: The native residents of Basque country in the western part of the Pyrenees Mountains between France and Spain still speak remnants of Euskera, a language the first European settlers brought in more than 10,000 years ago. The Basques have unusual frequencies of cetain ABO and Rh blood types, rare mitrochondrial DNA sequences and cell surface antigen patterns and a high incidence of a mild form of muscular dystrophy. So is this an example of ___________________.

Which is an example of an open-ended question? 

The genes in a population comprise its  

  A trait that occurs more frequently in both members of identical twins than in both members of fraternal twins probably has a significant____________ component.