Based on the principle of parsimony, a cladogram describing a group of species containing which of the following is the best phylogeny estimation?
A. Five synapomorphies and one autapomorphy
B. Seven synapomorphies and three autapomorphies
C. Six synapomorphies and two autapomorphies
D. Eight synapomorphies and four autapomorphies
Ans: A. Five synapomorphies and one autapomorphy
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Which trait of a vascular plant allows it to grow in the direction necessary for survival?
a. apical meristem b. gametangium c. stomata d. sporangia
In what way do steroid hormones differ from
hormones derived from amino acids?
a. steroid hormones are not derived from organic molecules b. steroid hormones do not need a plasma membrane receptor c. steroid hormones use a second messenger system d. steroid hormones do not travel in the blood e. more than one of these is a way in which steroid hormones differ from amino acidderived hormone
Human fingerprints are a good example of a multifactorial trait. What evidence can you cite to suggest that fingerprints are partially influenced by genes? How about evidence suggesting that they are partially influenced by environmental factors?
What will be an ideal response?
Subtle differences in DNA sequences that vary from person to person are called ________
A) genomics B) chromosomes C) DNA microarrays D) pharmacogenomics E) single-nucleotide polymorphisms