Which genotype is homozygous?

a. XxTt

b. XXTt

c. xxTT

d. Xxtt

Which of the following investigators was/were responsible for the following discovery? In DNA from any species, the amount of adenine equals the amount of thymine, and the amount of guanine equals the amount of cytosine.

What are the elements weather for sunny weather

Both of Tim's parents have brown eyes, but Tim has blue eyes. How is this possible? A. Eye color is not a genetic trait. B. The characteristic (blue eyes) is carried in a recessive gene. C.

An endotoxin is A) the toxic portion of the LPS. B) a toxin produced within archaeal cells. C) a toxin known for its primary attack on the epidermis of mammals. D) the toxin produced in the periplasm of most bacteria.

Scientific Methods During a conference presentation, a scientist described the materials that she used and how she performed her exp Which best explains why a scientist would share these details in a conference?

Gregory is studying Lake Mairead. The lake has clear water and supports a healthy community of algae, fishes, and other aquatic organisms. Gregory hypothesizes that phosphorus is a limiting nutrient in the lake.

the distance between the Earth and the Sun is quite large. Which numbers are correct distances between them? Check all that apply.

Does nonpolar mean hydrophobic or hydrophilic

Select the characteristic that makes viruses different than bacteria. a.) Viruses are not made out of cells. b.) Pathogenic viruses cause diseases. c.) Viruses are found everywhere. d.) Viruses need to eat almost constantly to remain alive.

What is one reason that vascular plants are larger than nonvascular plants?