Currently, most geologists ________.

The image below shows Earth’s magnetic field. Earth’s magnetic field lines are distorted (i.e., not symmetrical) because ________.

A silica-rich igneous rock that has large crystals and makes up much of the continental crust is ________.

Name one drug you find interesting and briefly (1-2 sentences) discuss it. 

In an endangered African feline, the offspring of a true-breeding black parent and a true-breeding white parent are all gray. When the gray offspring are crossed among themselves, their offspring occur in a ratio of 1 black : 2 gray : 1 white. Upon close examination of the coats, each hair of a gray animal is gray. What is the mode of inheritance?

How many chromosomes and DNA molecules are found on the figure below?  

You are doing lab work with a new species of beetle. You have isolated lines that breed true for either blue shells and long antenna or green shells and short antenna. Crossing these lines yields F1 progeny with blue shells and long antenna. Crossing F1 progeny with beetles that have green shells and short antenna yields the following progeny: Assuming that the genes are linked, what is the map distance between them?  

James (I-1) is a 42-year-old man with hemophilia. His daughter, Susan (II-1), who has normal blood clotting, is married to Fred (II-2) who also has hemophilia. Susan and Fred are expecting their first child and an ultrasound shows that the fetus is male. If hemophilia is inherited as a sex-linked recessive condition, what is the approximate probability that their new son will have hemophilia?  

An example of a simple idea” for Locke would be:

Shell coiling of the snail Lymnea peregra results from a genetic maternal effect. An autosomal allele for a right-handed, or dextral shell (s+) is dominant over the allele for a left-handed, or sinistral shell (s). A pet snail called Martha is sinistral and can only reproduce as a female. Determine if each of the following statements is True or False and briefly explain your reasoning to select that answer. A. Martha’s genotype MUST be ss (3.5 points) B. All of the offspring produced by Martha MUST be sinistral (3.5 points) C. All of Martha’s brothers MUST be sinistral (3.5 points)