Questions

Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.

When is genetic drift a major factor in evolution is

* When there is low gene flow.

* When there is no selective pressure.

* When there is a bottleneck.

First Generation  Vacuum Tubes (1940-1956)

The first computer systems used vacuum tubes for circuitry and magnetic drums for memory

Sea appears blue in colour due to the scattering of the rays when they hit water molecules

Woodland tribes lived in wigwams and longhouses. Wigwams are round, wooden-framed structures, covered in bark. Only one familylived in a wigwam. Longhouses are made the same way as wigwams except they are rectangular, instead of round. They have a long hallway with rooms on both sides. Several related families shared a longhouse.

Longhouse Commonly lived in by entire Native American families in the Eastern Territories pre-colonization.