How many years ago did flowering plants evolve?

3.5 billion

144 million

50,000

5,000

In a lab diagnosis, a pathologist observed a test sample from a tuberculosis patient under a high-power microscope. Which type of bacteria is it if rod shaped structures were observed?

When a certain plant is without water for an extended period of time, guard cells close openings in the leaves of the plant, conserving water. What does this illustrate?

Comb shape in chickens represents one of the classic examples of gene interaction. Two gene pairs interact to influence the shape of the comb. The genes for rose comb (R) and pea comb (P) together produce walnut comb.

Which microscope do you use to see parts of a cell?

Identify the mechanism discussed below. The transfer of genes from one population to another Drives the changes that occur in populations A permanent change in the DNA sequence of a gene The random change in the frequency of an allele in a

You have a yellow pea, but you do not know if it is heterozygous (Yy) or homozygous. When you perform a test cross to a green recessive pea (yy), you observe that half the offspring have yellow peas and half have green peas. What can you conclude? a.

Compare and contrast Uniformitism and Catatrophism

The study of nervous co-ordination of endocrine system is known as?

What is the name of the classification system that we still use today

Compare the roles of the phospholipid bilayer in passive and active transport.