What is the primary role of a mushroom's underground mycelium?
a) protection
b) anchoring
c) sexual reproduction
d) asexual reproduction
e) absorbing nutrients
Answer: e) absorbing nutrients
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Which of the following were the first vertebrates to live and reproduce in dry environments?
A. fish B. amphibians C. birds D. reptiles E. mammals
Which type of lipid is composed of long-chain fatty acids attached to long-chain alcohols?
A. Triglycerides B. Phospholipids C. Sterols D. Waxes E. Most neutral fats
Many people assume pedigrees are like phylogenies. Which of the following comparisons between pedigrees and phylogenies are true?
a. Both show the splitting and the recombining of branches or lineages over time. b. A pedigree tells us about the ancestry of individuals, while most phylogenies tell us about the ancestry of populations. c. Both expand as one looks backward in time. d. All of the above.
Answer the following statements true (T) or false (F)
1) Cytokinesis in plant cells occurs by means of a cleavage furrow. 2) DNA replication occurs in mitosis. 3) Mitosis and cytoplasmic division result in the formation of two genetically identical cells. 4) Germ-line cells are haploid but gametes are diploid. 5) At the end of meiosis I, each daughter cell contains the sister chromatids from only one chromosome from each chromosomal pair. 6) XY individual with a loss-of-function mutation in the SRY gene is expected to be female.