Describe two processes that would result in a triploid zygote. What will be an ideal response?
ANSWER: One process resulting in a triploid zygote is when homologous chromosomes fail to separate
during meiosis I, the division in meiosis II will produce diploid gametes. The fertilized egg
produced by fusion of this diploid gamete with a normal haploid gamete will be triploid.
Another process is the simultaneous fusion of a haploid egg with two haploid sperm. This
process is called disper
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What important structure uses lenticels to communicate with the atmosphere in mangroves?
a. Pneumatophores b. Aerenchyme c. Chromatophores d. Nutritive roots
Four of the following are shared characteristics of parabasalids and diplomonads. Which is the exception?
a. heterotrophy b. flagella c. oxygen-poor or anaerobic habitats d. abundant mitochondria e. presence of a pellicle
The motor division of the PNS carries information away from the CNS.
a. true b. false
G1
b. S. c. G2. d. prophase. e. mitosis.