Which division of time during Earth's history came first?

a. The Paleozoic Era

b. The Cenozoic Era

c. The Late Precambrian

d. The Mesozoic Era

Which outcome could be expected in a family that carries an X-linked recessive trait? More males than females express the trait. More females than males express the trait. An equal number of males and females express the trait.

Which theory was disproved when Mendel observed that the F1 generation of a monohybrid cross resembled one of the parents? a. the theory of independent assortment b. the theory of evolution by natural selection c.

Light touch and gravity are all examples of different environmental

When Charles Darwin arrived in South America what observation did he make regarding rabbits?

In a biology class, one student argues that tissues are the building blocks of organs. Another student argues that cells are the building blocks of organs. Which student do you agree with? Support your position with scientific facts.

If there is a mutation, and the wrong amino acid is put into sequence, what is the result?

What is tolerance (explanation)

Which actions should a nurse take while caring for a preschooler whose blood lead level is found to be 25 mcg/dl? select all that apply?

Sodium benzoate is a bitter chemical often used in tiny amounts as a food preservative. The ability of humans to taste sodium benzoate is caused by a dominant allele, t. The recessive allele ("non-taster") is n.

Which of the following correctly displays the sequence of developmental milestones? A) blastula → gastrula → cleavageB) cleavage → gastrula → blastulaC) cleavage → blastula → gastrulaD) gastrula → blastula → cleavage