How do mutations lead to genetic variation quizlet? Mutations and sexual reproduction result in increased genetic variation. Mutations can be the result of mutagens or errors during DNA replication. Mutations that are not repaired can become a permanent part of the genetic makeup of the cell. Are mutations genetic variation? Genetic variation can refer to […]

Where does most of the air pollution come from? Most of this air pollution we cause results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how much fossil fuel is burned and how much […]

What is the most diverse organism? prokaryotes What is the most common organism on earth? Pelagibacter ubique What is the most abundant microbes on the Earth? Tailed phages are a kind of bacteriophage— viruses that infect bacteria. They are the most abundant organism on Earth, with an estimated 10^31 particles in our biosphere. Why are […]

Which would most likely increase the genetic variation in a population of organisms? Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. Overall, the main sources of genetic variation are the formation of new alleles, the altering of gene number or position, rapid reproduction, and sexual reproduction. What […]

How did the finch beaks change between 1976 and 1978? The Grants had studied the inheritance of bill sizes and knew that the surviving large-billed birds would tend to produce offspring with larger bills, so the selection would lead to evolution of bill size. This caused an increase in the finches’ average beak size between […]

What does a policy statement issued by the AVMA represent? In veterinary medicine, a policy statement issued by the American Veterinary Medical Association (AVMA) represents a consensus of an opinion on a specific topic. Which of the following veterinary health care team members is responsible for maintaining the pharmacy area? Which of the following veterinary […]

What is a whales nose called? blowhole Do whales have beaks? There are about 20 different species of beaked whales in the world’s oceans. Their key distinguishing feature is the presence of a ‘beak’, somewhat similar to that of most dolphin species. The teeth that some species of beaked whales do have are usually only […]

What are some changes that occur in males and females during puberty? Your voice gets lower or deeper. It may crack sometimes while it’s changing, but that’s totally normal and eventually goes away. Your penis and testicles get bigger. Hair may grow on your face, chest, and back. Your chest and shoulders get broader. You […]

What controls the inheritance of traits in organisms? The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Variant copies of a gene are called alleles, and an individual’s genotype is the sum of all the alleles inherited from the parents. Do gametes […]

What are secondary historical sources? In contrast, a secondary source of information is one that was created later by someone who did not experience first-hand or participate in the events or conditions you’re researching. For the purposes of a historical research project, secondary sources are generally scholarly books and articles. Which of the following is […]