In which type of cell is very little differentiation observed?
a. inactive liver cell
b. brain cell
c. sperm cell
d. fertilized egg cell
d. fertilized egg cell
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What happened in Australia when rabbit hemorrhagic disease virus was released to control the rabbit population?
What will be an ideal response?
How many times must the centrosomes replicate in order for meiosis to occur?
A. once B. twice C. four times D. Centrosomes do not replicate.
A parasite is also a(n):
A. nitrogen fixer B. autotroph C. heterotroph D. methanogen E. mutualist
Identify the correct comparison between the human X and Y chromosomes.
A. Only the X chromosome is paired with a homologous match in human females. B. The X chromosome is larger than the Y chromosome. C. Only the Y chromosome is always found without a homologous match. D. Although both are sex chromosomes, they do not share the same genes. E. All of the answer choices are correct.