The origin of a new plant species by hybridizing two existing species, coupled with accidents during cell division, is an example of _____
A) allopatric speciation and autopolyploidy
B) sympatric speciation and allopolyploidy
C) allopatric speciation and allopolyploidy
D) sympatric speciation and autopolyploidy
Answer: B
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What term describes an organism with two complete sets of chromosomes from two different species?
A. Tetraploid B. Aneuploid C. Allodiploid D. Allotetraploid
The alternative complement pathway plays an important role in innate immunity, but it is not an effective defense against intravascular invasion by bacteria and some fungi.
Answer the following statement true (T) or false (F)
Which of the following is the correct sequence of events during mitosis?
A) Nuclear membrane dissolves, chromosomes line up, chromosomes split, nuclear membrane forms B) Nuclear membrane forms, chromosomes line up, chromosomes split, nuclear membrane dissolves C) Chromosomes line up, nuclear membrane forms, nuclear membrane dissolves, chromosomes split D) Chromosomes split, nuclear membrane dissolves, nuclear membrane forms, chromosomes line up
Which structure receives blood from the systemic circuit?
A) left ventricle B) pulmonary veins C) right ventricle D) left atrium E) right atrium