Which statement best describes what causes an organism to change over time? Why does the sequoia tree have leaves and bark, why doesn’t it look like a really big seed?
1. Cells gain new DNA as they grow, so as the DNA changes, it gets the new instructions it needs to build the complex tree
2. All the cells of the sequoia tree have the same DNA, but different genes on the DNA are expressed (or turned on), creating specialized cells
3. All the cells of the sequoia tree are unique and have different DNA, you have billions of cells, each with different instructions to turn into a complex organism
4. We have between 20-200 different types of cells each with its own DNA. Those different cells divide and spread their different DNA to various types of the body
5. Both A and D
Answers: 1
Biology, 22.06.2019 02:00, haleylecompte
Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.
Answers: 3
Biology, 22.06.2019 04:30, kaciewelkerouwdfa
Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.
Answers: 1
Which statement best describes what causes an organism to change over time? Why does the sequoia tre...
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