The difference in sizes between male and female gametes results from two unequal divisions of __________________ in female gamete development.
A) cytoplasm
B) nuclei
C) mitosis
D) chromosomes
E) DNA
A) cytoplasm
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How do fossils provide evidence of evolution?
a. Fossils show the progression of anatomical changes that resulted in new species. b. Fossils show us when a species has died off and where the species was located. c. Fossils show us where a species lived during its existence. d. Fossils provide no evidence for evolution, only natural selection.
Discuss coevolution as it relates to predator-prey interactions. Include a brief discussion of two specific examples. What will be an ideal response?
Why do siblings look different from one another (except identical twins)?
A. Each sibling has a different # of chromosomes B. Products of meiosis contain identical combinations of the same genes C. Products oil meiosis result in different combinations of the same genes D. Random combinations of eggs and sperm E. C & D
Place the steps of biofilm formation in the correct order.1. Surface (substratum) is preconditioned by environmental molecules.2. Microbes attach and detach from the preconditioned surface.3. Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably.4. Biofilm matures and some microorganisms escape to the planktonic state.
Fill in the blank(s) with the appropriate word(s).