Choose the true statements about the evolution of complex characters, such as powered flight.
_____ Phylogenetic analysis using cladistics can help reveal the sequence leading to the evolution of a complex character.
_____ Usually a single mutation in one gene leads to the simultaneous appearance of the complex character.
_____ Often the initial stage in the evolution of a complex character was an adaptation to some unrelated selection pressure.
_____ The intermediate stages in the evolution of a complex character had no fitness advantage.
__X__ Phylogenetic analysis using cladistics can help reveal the sequence leading to the evolution of a complex character.
_____ Usually a single mutation in one gene leads to the simultaneous appearance of the complex character.
__X__ Often the initial stage in the evolution of a complex character was an adaptation to some unrelated selection pressure.
_____ The intermediate stages in the evolution of a complex character had no fitness advantage.
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Roberts Syndrome extremely rare genetic disorder that is characterized by mild to severe prenatal retardation or disruption of cell division, leading to malformation of the bones in the skull, face, arms, and legs. Shown below is a pedigree for a family with Robert’s Syndrome. Consider couple II-C and II-D. What is the probability that their next two children will have Robert's Syndrome?
A. 1/4
B. 1/2
C. 1/8
D. 1/16
E. 1/32
Which of the following bacteria benefits humans?
A) Enteritis Salmonella B) Lactobacillus C) Streptococcus Pyogenes D) Salmonella Typhi
During a time when resources are abundant, one would not expect much evolutionary change
Indicate whether the statement is true or false
Poliovirus is most often transmitted via
A) contaminated water. B) household pets. C) mosquitoes. D) droplets. E) endospores.