Messenger RNA is essential for carrying out the ________ function of DNA
A. energy production
B. cell replication
C. cytoplasmic
D. protein synthesis
Answer: D. protein synthesis
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Making new genomes is called ________.
A. bioengineering B. cloning C. recombinant DNA D. synthetic biology E. genetic engineering
The adrenal glands are located
A. attached to the thyroid gland. B. in the brain. C. in the testes. D. at the base of the neck. E. on the kidneys.
The term for the use of microorganisms to restore damaged environments is
A) epidemiology. B) bioremediation. C) chemotherapy. D) serology. E) ecology.
Suppose you find a new triploid life form that reproduces sexually by combining the haploid gametes of three different sexes
One of the sexes is female with large and "expensive" egg cells; the other two sexes are two forms of males that each produce minute and "cheap" sperm. Using Maynard Smith's reasoning, what would be the cost of sex in this system (when the proportion of asexually producing females is low)? Fill in the table below using the following data: • n = number of asexually producing females in the population at time t • Assume that at time t, both types of males and the sexual females occur in equal proportions: Nm1 = Nm2 = Nf = N • In generation t, let k be the number of offspring produced by a female (k is the same for asexual and sexual females) • Assume that all offspring survive Adults in t genera-tion Offspring Adults in t + 1 generation Asexually repro-ducing females Sexually repro-ducing males Type 1 Sexually repro-ducing males Type 2 Sexually repro-ducing females What is the proportion of asexual females in the population at t? A. _____________________________________________________________________ What is the proportion of asexual females in the population at t + 1? B. _____________________________________________________________________ How many fold is the cost of sexual reproduction in this system? C. ________ What will be an ideal response?