Traits controlled by recessive alleles on the x chromosome are more common in males than in females. explain why.

Which of the following grows directly for a plants stem? 1. Overate leaves 2. Palmate leaves 3. Petiole leaves 4. Sessile leaves

Which of the following is an example of an internal influence? your cultural background how you feel about yourself your family, friends, peers, teachers and role models the community or environment where you live

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and by depicting them in a cladogram.

What happens to ground water when the rate of infiltration is less than the rate of water being pumped out of the ground

Can you match terms related to operons to their definitions? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. 1.

Which of these examples demonstrates metabolism? A. A person eats a large dinner for digestion and energy. B. A human's skin has the ability to tan in the sun. C. A person puts on socks because his feet are cold. D.

What structure in the fetal heart allows for mixing of blood between the two atria?

Which of the following is a constructive process? deposition detachment transport plucking

Coal deposits were formed from? A. Plant life in ancient B. Ancient plankton and marine life C. Freshwater organisms from the last 100,000 years D. Modern plants and animals

According to the Hardy-Weinberg principals, which of the following can prohibit genetic equilibrium?