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Questions in biology

[Free] A test cross with an organism with a homozygous recessive genotype results in 50% of the offspring exhibiting the recessive trait. What is the genotype of the test-cross parent? I. Homozygous recessive II. Homozygous dominant III. Heterozygous A. I only B. II only C. III only D. I or III E. II or III

[Free] Place the mouse, fruit fly, duck, and gorilla in order of their relatedness to humans, from least related to most related. A. mouse - fruit fly - duck - gorilla B. fruit fly - mouse - duck - gorilla C. gorilla - mouse - duck - fruit fly D. fruit fly - duck - mouse - gorilla

[Free] Which of the following are examples of trisomy? A. Turner Syndrome B. Down's Syndrome C. Klinefelter's Syndrome

[Free] How do scientists use seismic waves to determine the interior structure of Earth?

[Free] What is biogeography, and what does it provide?

[Free] Explain how a species can evolve through natural selection.

[Free] Which of the following organisms can perform alcoholic fermentation? A. Yeast and humans B. Yeast and bacteria C. Yeast only D. Yeast, humans, and bacteria

[Free] Which of the following statements is true concerning LUCA? 1. LUCA was a cell. 2. All life on Earth evolved from LUCA. 3. LUCA probably existed around 4.5 billion years ago. a. 1 only b. 2 only c. 1 and 2 d. 1, 2, and 3

[Free] How do day and night at Uranus's equator change as Uranus revolves around the Sun?

[Free] A circular pool is ten feet in diameter and five feet deep. What is its volume, in cubic feet?