In your own words, what is the definition for Precambrian?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3

28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?