GED Science Practice Test: Summary – Cell Cycle
Binary fission and mitosis are forms of asexual reproduction that result in daughter cells genetically identical to each other and the parent cell. Mitosis also plays a role in replacing aging cells, which is not considered “reproduction,” but rather replacement. Meiosis, however, is a form of sexual reproduction, resulting in haploid gametes that combine to form cells which are not identical to either the mother or the father. Sexual reproduction allows for a mixing of genetic information, which leads to an increase in the genetic variability of a population of organisms.
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- Question 1 of 2
Read the following paragraph to answer questions 2 and 3:
“Panama disease is a plant disease of the roots of banana plants. It is a type of Fusarium wilt, caused by the fungal pathogen Fusariumoxysporum. The pathogen is resistant to fungicide and cannot be controlled chemically. Bananas are particularly susceptible because of the identical genetic composition of modern banana crops.
In the 1950s, Panama disease wiped out (except in Asia) the Gros Michel banana, the dominant cultivar of bananas, inflicting enormous costs and forcing producers to switch to other, disease-resistant cultivars. However, new strains of Panama disease continue to threaten the production of today’s most popular cultivar, Cavendish.”
Which of the following statements most likely explains why banana crops are so susceptible to Fusarium disease?CorrectIncorrect
- Question 2 of 2
A scientist decides to investigate ways to develop fusarium-resistant strain of banana. Which of the following would be the most likely way to introduce fusarium resistance into the banana population?CorrectIncorrect