Identify the pattern of Mendelian inheritance represented in the pedigree above and explain how you made this determination
ANSWER: This pedigree represents a pattern of Y-linked inheritance. Only males have Y chromosomes,
so traits encoded by genes on the Y are passed directly from father to son. All Y-linked traits
are expressed in males because males are hemizygous for all genes on the Y chromosome
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On which part of the carbon cycle have humans had the greatest impact?
A. return of CO2 to the atmosphere by oxidation of ancient organic matter B. capture of atmospheric CO2 by chemical weathering of rocks C. storage of CO2 through biomineralization in the oceans D. deposition of organic carbon in deep sea sediments E. All of the answer options have been greatly impacted by humans.
What are the two short poison injecting fanged appendages on the anterior of the spider which are used for eating?
a) chelicera b) jaws c) chelapeds d) maxillae e) mandibles
What is the causative pathogen of Q fever?
A) Bacteroides fragilis B) Prevotella C) Coxiella burnetii D) Moraxella catarrhalis E) Acinetobacter
In Drosophila, the allele red eyes (bw+) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv+) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv+ are crossed to flies homozygous for bw+ and hv to obtain doubly heterozygous F1 progeny.Given that these two gene loci are very closely linked, the phenotypic ratio in the F2 generation should be closest to
A. 3 red eye, thin wing veins: 1 brown eye, heavy wing veins B. 1 brown eye: 1 red eye: 1 heavy wing veins: 1 thin wing veins C. 1 brown eye, heavy wing veins: 2 red eye, thin wing veins: 1 brown eye, thin wing veins D. 1 brown eye, thin wing veins: 2 red eye, thin wing veins: 1 red eye, heavy wing veins