In single-gene traits, natural selection can lead to which of the following?

a. Allele frequency change

b. Directional selection

c. Disruptive selection

d. Founder effect

The endosymbiotic theory provides an explanation for the origin of chloroplast. What trait of chloroplasts supports this explanation

The poison ricin, derived from the castor bean plant, interferes with the protein synthesis. Which formed elements of blood would ricin affect directly? Are there any formed elements in the blood that ricin would not affect? explain

Forests are bio diversity hotspots why?

What is a long-term effect of the increased primary productivity of a terrestrial ecosystem

Sugar loaded into the source end of the phloem draws water into the sieve tubes by osmosis, raising the pressure. What happens to the water at the sink end?

An organism has three different versions of Gene Tyx - version a, b and c. Determine the inheritance pattern of this trait. Then list below all of the different genotypes that an organism with this gene could have.

What kind of mixture is blood?

Give a basic definition of evolution as taught in this Unit 2. Answer should be at least 3 sentences long and include at least 4 key terms learned throughout the lesson.

RNA and DNA are similar because: a. both contain the sugar deoxyribose b. they are both composed of nucleotides c. both contain the nucleotide Uracil d. they are both always double-stranded helices

Chains of nucleotides from?