Homologous recombination occurs only between DNA molecules that are identical in nucleotide sequence without any variation.

a. false, because crossing-over does not happen
b. false, because only similar sequence is needed
c. true, for all eukaryotic diploid cells
d. true, but only for cells that have more than 10 chromosomes

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geological equipment to analyze the composition of rock?

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?

Are the brightest stars low magnitude or high magnitude?