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

Biology & Microbiology

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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

Biology & Microbiology

Specific segments of DNA that are the functional units of inheritance are called ________

A) chromosomes B) genes C) chromatids D) telomeres

Biology & Microbiology

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?

Biology & Microbiology

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).

Biology & Microbiology