Q: What is it called when two alleles are both expressed in the heterozygous individual? Choices: - weak dominance - low dominance - shared dominance - codominance A:
codominance

Q: Constriction and dilation allow the circulatory system to change the amount of blood flowing to which body parts? Choices: - arteries - tissues - muscles - organs A:
organs

Q: Q: Spermatogonia are the stem cells of what male sex organs? Choices: - Epididymis - Prostate - ovaries - testes A:
A: testes

Question: Q: What were the first animals to have true lungs and limbs for life on land? Choices: - birds - mammals - reptiles - amphibians A:
Answer: amphibians

*Question*
Q: Generally speaking, electronegativity values ______ from left to right across a row in the periodic table and _______ down a column. Choices: - reverse, descend - move, fall - decrease, increase - increase, decrease A:
**Answer**
increase, decrease

(Question)
Q: What is the measure of the force of gravity pulling down on an object called? Choices: - factor - mass - volume - weight A:
(Answer)
weight