For some single-celled organisms reproduction only occurs asexually. What benefit does an organism gain by only using this method of reproduction?
A) It allows for varied genetic information.
B) It is a quick way to produce two identical daughter cells.
C) The offspring created have double the genetic information as the parent cell.
D) It allows for daughter cells that are not genetically identical because of crossing over.
Ans: B) It is a quick way to produce two identical daughter cells.
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Which of the following is/are true of DNA replication?
A. It starts at the origin of replication. B. Nucleotides are added to the 3' end. C. It requires an RNA primer to get started. D. It utilizes polymerases. E. All of the choices are true.
Flowering can be regulated by light, temperature, gibberellin levels, or internal factors. What do all of these different flowering pathways have in common?
A. All four pathways result in a decrease in LEAFY (LFY) expression, which induces flowering. B. All four pathways result in an increase in CONSTANS (CO) expression, which induces flowering. C. All four pathways result in an increase in LEAFY (LFY) expression, which induces flowering. D. All four pathways result in a decrease in CONSTANS (CO) expression, which induces flowering.
Enrique was working with chemicals in a paint factory and suddenly lost the ability to detect odors. Could this loss have anything to do with a failure in the thalamus?
What will be an ideal response?
Suppose that in the use of polynucleotide phosphorylase, nucleotides A and C are added in a ratio of 1A:5C. What is the probability that an AAA sequence will occur?
What will be an ideal response?