Which of the following is an example of homoplasy?

(A) hair in humans and fur in mice

(B) astragalus ankle bones in hippos and deer

(C) Hox genes in humans and flies

(D) streamlined bodies in dolphins and ichthyosaurs

What does a NSF seal certify?

When an environmental stimulus is received, the signal is usually transmitted through three types of nerve cells. In which order is the signal transmitted through these cells?

An unknown DNA molecule was cleaved using several restriction enzymes individually and in various combinations. The DNA fragment sizes were determined by agarose gel electrophoresis and the restriction enzyme recognition sites were mapped.

A male eats a full bag of salty potato chips. What effect does this have on urine concentration and volume? Explain the mechanisms involved.

A 60-year-old client tearfully explains to the nurse how her husband downplays her frequent migraines and tells her that she needs to "just push through a headache.

How are condensation and precipitation connected to weather?

Today, many crops grown by farmers are genetically engineered. Which of the following is a likely risk of using genetically engineered crops? The engineered genes in the crops could be transferred to wild varieties of the plants.

In witch structures is all the genetic information of an organism found?

Red and white roses are crossbred neither are dominant The offspring would be because of

Which is a genetic counselor least likely to recommend for a client who has been unable to become pregnant? A. vision testing B. fertility testing C. blood analysis D. family history analysis