The color of petunia flower can be changed from red to blue by altering the pH of the soil. This is an example of
A. norm of reaction.
B. the environment influencing the genotype.
C. codominance.
D. incomplete dominance.
E. range of inheritance.
A. norm of reaction.
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Which of the following is a possible use for gene cloning?
A. Cloned genes can be introduced into bacteria or livestock to make pharmaceutical products such as insulin. B. Cloned genes can be introduced into plants and animals to alter their traits. C. Cloned genes can be used to treat diseases. D. Large amounts of protein can be produced to study structure and function. E. All of the choices are correct.
Four of the five answers listed below are haploid. Select the exception
a. gametophyte b. zygote c. sperm d. microspore e. gamete
How do fossils provide evidence of evolution? How are scientists able to determine the age of fossils? What will be an ideal response?
The type of bond that forms between two atoms when electrons are shared is a(n) ________ bond.
A. covalent B. kinetic C. ionic D. hydrogen