The greatest mass extinction of all time occurred at the end of the ____ era, in which more than 90% of all existing
marine organisms became extinct.
a. Archaean
b. Paleozoic
c. Cenozoic
d. Mesozoic
e. Proterozoic
b
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Which of the following is a correct expression of the Hardy-Weinberg equation?
a. p + q = p2 + q2 b. p2 + 2pq + q2 = 0 c. p2 + pq ? q2 = 1 d. p2 + 2pq + q2 = 1 e. p+q = 0
Specific segments of DNA that are the functional units of inheritance are called ________
A) chromosomes B) genes C) chromatids D) telomeres
What is evolution, at a fundamental or basic level… i.e.; what is changing over time in a population?
What will be an ideal response?
Two identical ___________ cells are formed. Each cell has received a complete set of chromsomes. The DNA in each chromosome unwinds into a long thin thread so that genes can become active and give the instructions for making proteins.
Fill in the blank(s) with the appropriate word(s).