Which statement best describes vestigial structures

A. All animals have them

B. They are necessary for an organisms survival

C. They contain genetic mutations

D. They may have had an important function in the past.

The appendages of a dolphin are modified for movement in water and the appendages of a dog are modified for running. These are examples of which character category of homologous structures? A) Embryonic B) Derived C) Nascent D) Primitive

What is the set of intangible factors, including the expressed vision of executives, hierarchy and bureaucracy, and style of communication, that influences attitudes and behavior in organizations called

What do sea jellies, earthworms and spiders have in common?

What's the definition to synthesis

4 Penicillin is an antibiotic that was discovered in 1928. Today, many species of bacteria have acquired resistance to penicillin. This adaptation occurred as the result of

A patient with a personality disorder has unreasonable fears of abandonment, criticism, and rejection. what central issue of personality is distorted in this patient?

A woman with severe periodontal disease has a ___ times greater risk for a preterm infant with low birth weight compared with women with little or no periodontal disease.

Part 1: Which substance has a higher solubility? Part 2: Explain your answer for Part 1. Julia did an experiment to study the solubility of two substances. She poured 100 mL of water at 20 °C into each of two beakers labeled A and B.

The line of 49 degrees north latitude follows a ... A. National border B. Long river C. Mountain range S. State border

Which molecule crosses the plasma membrane by diffusion? oxygen glucose enzymes all of the above