Why is it important sperm and the egg to each be haploid before they fuse to become the zygote?

Where does the majority of soil originate from?

A bird and the snake would both be classified as

A population of yeast grows in a test tube under ideal conditions until it runs out of space in the test tube. which kind of curve would accurately show the changes in this population. A. a survivorship curve B. an s-curve C. a life span curve d.

What are the 5 principles of natural selection?

Give one real life example of an enzymatic reaction in the human body.

Neurogenesis in the adult hippocampus is stimulated by

Three linked autosomal loci were studied in cucumbers: fruit color (dark vs. light), tendril size (long vs. reduced) and fruiting (normal vs. early).

In the United States there are many types of rabbits. Four different species can have four different ranges or habitats. In which range would developing white fur in winter most likely not be an advantage? A.

Earth's magnetic field: a. changes over time b. remains unchanged c. does not affect solar winds d. is not affected by solar winds

Which statement is true about scientific theories and laws? A. A theory can never become a law B. If enough evidence is found for theory, it will become a law C. Theories have more proof than laws D.