Answer the following statements true (T) or false (F)
1. RNA polymerase can bind to the promoter region of the DNA even when the lac repressor is bound to the operator site.
2. Both eukaryotes and prokaryotes require a promoter region for gene transcription.
3. A cis-effect is a form of gene regulation that can occur between two DNA segments that are not physically adjacent.
4. Eukaryotic genes are almost always organized in groups, similar to operons in prokaryotes.
1. TRUE
2. TRUE
3. FALSE
4. FALSE
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Meerkats are small desert mammals that live in groups of 20–50 animals. You observe a female meerkat who spends all of her time caring for the 1-year-old offspring of her sister (her nieces and nephews)
The aunt is capable of reproduction but has not reproduced. Which of the following would contribute to the evolution of this behavior pattern? A. The odds of any one female reproducing are completely random. B. Offspring require the efforts of a single adult (the mother) in order to be successful. C. Offspring require the efforts of at least two adults in order to be successful. D. Offspring are independent at the age of three months, with no adult care after that point.
Precambrian rocks contain fossils of:
a. only single celled organisms. b. great forests of flowering plants. c. the first insects. d. cells and simple organisms. e. primitive fish.
Which of the following is not true:
a) The flow of genetic information in a cell is RNA to DNA to Protein. b) A mutation is any change in the nucleotide sequence of DNA. c) Mutations may result from errors in DNA replication. d) Mutations may result from physical or chemical agents called mutagens.
Compare and contrast the oncogenic viruses human herpesvirus 4 (Epstein-Barr virus) and hepatitis B virus (HBV).
What will be an ideal response?