1. Consider an atom of nitrogen (N), which is more electronegative than an atom of hydrogen (H). N has 5 valence electrons, whereas H only has 1 (H can only form 1 total pair of electrons in it’s valence shell) … Given this information: If an atom of N were to […]

You have screened for several new recessive mutations in a species of wasp. Wasps homozygous for apricot (aa) have pale orange eyes. (Wild-type eyes are brown.) Wasps homozygous for blunt (bb) have short wings. (Wild-type wings are long.) You make a pure-breeding double-mutant (apricot, blunt) line and cross it with wild-type wasps. The F1 is […]

Q. A man’s grandfather has galactosemia, a rare autosomal recessive disease. The man married with a woman whose sister had galactosemia. The woman is now pregnant with their first child. a. Sketch the pedigree as described. b. What is the possibility that this child will have galactosemia? c. If the […]

Suppose that two mosquito populations are being studied. The populations differ in their choice of the water in which they choose to lay their eggs. One population is urban, and avoids laying eggs in water treated with insecticides which are heavily used in urban areas. What difference between populations would […]