Bending of light waves by the ocular and objective lenses of the microscope is known as.
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The probability that an ancient species will be represented in the fossil record is a function of:
A. the properties of the organisms themselves, such as whether or not they make hard skeletons. B. the properties of the environments in which they live, such as whether or not burial was likely. C. the properties of the climate in which they live, such as how warm or cold it was. D. the properties of the organisms themselves and the environments in which they live. E. all of the answer options are correct.
Imagine that fur length in a chinchilla species is a polygenic trait controlled by at least three genes. For each of these genes, long fur (PL, QL, or RL) has incomplete dominance over light (PS, QS, RS). A chinchilla homozygous for long fur is mated with a chinchilla that is homozygous for short fur. What will be true of their offspring?
A. 1/4 will be homozygous for long fur, 1/4 will be homozygous for short fur, and 1/2 will be heterozygous. B. 1/2 of their offspring will have long fur, 1/2 of their offspring will have short fur. C. 1/2 of their offspring will be homozygous for long fur, 1/2 of their offspring will be homozygous for short fur. D. All of their offspring will have intermediate-length fur. E. All of their offspring will have long fur.
Which organisms produced oxygen in the atmosphere of early Earth?
a. Fungi b. Grasses c. Red algae d. Cyanobacteria e. Green Alga
A carbon atom has an atomic number of 6 and an atomic mass of 12. Assuming it is neither an ion nor part of a molecule, how many electrons does it have?
a. four b. five c. six d. eight