Duplication in the gene encoding a protein involved in vision has enabled humans to acquire trichromatic vision, which is the ability to distinguish between red, green, and blue colors. Which type of mutation is this?

If B = the benefit of a behavior to a recipient, C = the cost of the behavior of the donor, and r = the degree of relatedness between the recipient and donor, then if rB ___ C, altruism can evolve.

The similar pattern of the phylogenies suggests the characteristics co-speciated with one another. Which of the choices is an accurate statement reflecting the figure shown? a. This is not an example of co-speciation. b.

In what stage of the cell cycle are the daughter cell produced

The structure of water is critical to the properties of water that support life on earth. Water is able to achieve these properties due to the nature of the molecule itself.

Which abo blood type is considered to be the universal donor?

When a mass increases, its gravitational force A. Increases B. decreases C. stays the same

Colpidium colpoda is a unicellular eukaryote that lives in freshwater, eats bacteria, and moves by cilia (see Figure 6.23b). Describe how the parts of this cell work together in the functioning of C.

Which statements apply to density? Check all that apply. >Density is a chemical property of an object. >The density of an object is constant. >Density is a derived unit of measure. >Density is the sum of the mass and volume of an object.

For some invertebrates that live in water, the sense of taste and the sense of smell are identical. Why do you think separate organs for taste and smell might have evolved in animals that live on land but not in some animals that live exclusively in

Plants can only cause mechanical weathering. true or false.