Recombination frequencies obtained from experimental crosses can be used for which of the following?

a. determining the sex of the individual
b. building a linkage map for a chromosome
c. predicting the type of chromosomal defect

What is the function of nucleic acids

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?