The recombination frequency between gene B and gene C is 11%. The recombination frequency between gene B and gene D is 5%. The recombination frequency between gene C and gene D is 15%. What would be the arrangement of these genes on a linkage map?
A) CDB
B) DBC
C) BCD
D) More information is needed.
B
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Achondroplasia is a form of dwarfism in humans. It is caused by a mutant allele of the fibroblast growth factor receptor gene (FGFR) that produces an overactive protein. Having one copy of the mutant allele results in dwarfism. Two copies of the mutant allele results in death before birth. Based in this information, what can you infer about the inheritance of the FGFR alleles?
A) The mutant FGFR allele is pleiotropic. B) Some achondroplastic dwarfs are heterozygous for the mutant allele and some are homozygous. C) The wild-type and mutant FGFR alleles are codominant. D) The mutant FGFR allele shows incomplete penetrance.
This type of selection favors both extremes of the phenotype spectrum within a population
a. directional b. stabilizing c. disruptive d. natural e. neutral
A(n) exergonic reaction results in a net gain of free energy
__________________ Indicate whether the statement is true or false.
Why is the left side of the heart stronger than the right side of the heart?
A) The left side pumps blood to the right side of the body, which has more muscle mass. B) The right side pumps only to the lungs, and the left side pumps blood around the whole body. C) The right side pumps blood only to the brain, and the left side pumps blood around the whole body. D) The left side receives more oxygen from the lungs.