Which of these human traits is altered by variations in environment?

a height

b hairline

c blood type

d smile dimples

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

During binary fission, what events must occur before the cell splits into two new cells?

If the dimensions of a cube-shaped cell with a length, height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6