Down syndrome occurs when a particular gene is injured on the x chromosome.

a. True

b. False

Taq polymerase is an enzyme isolated from the organism thermus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes.

In an controlled experiment, why is it important to change just one variable at a time p. s it a science question but they didn't have a science button

Which test would tell the presence of melena? barium enema upper gi series stool culture stool guaiac abdominal ultrasonography?

What are the two factors that create metamorphic rocks?

Agriculture led to an increase in the size of the human population. Which of the following was the most important impact of agriculture on the human population size?

Jessi consumes a diet of 1920 total kcalories that has 80 g of fat. what percent of jessi's diet comes from fat? (give answer to the appropriate reporting digit. only give the value. do not include the term percent or its abbreviation.)

Scientists break down evolution into catogories

The process of sediments being compacted and cemented to form sedimentary rocks is called A. metamorphism. B. deposition C. crystallization D. lithification

What is presumptive identification of a microorganism?

Which statement best describes the climate of a city? Select one: The average annual temperature of Austin, TX is 68.5°E San Antonio, Texas had a high temperature of 102°F today. Dallas, Texas had 8.6 centimeters of rain today.