The ant Myrmecia pilosula has the smallest number of chromosomes possible in a eukaryote: females possess only one pair of chromosomes, and males have only one chromosome! Put another way, female M
pilosula can be described as having the haploid condition n = 1 and the diploid condition 2n = 2.
Based on this scenario as well as your knowledge of gamete formation, a female M. pilosula can produce gametes with ________ different sets of chromosomes.
A) eight B) four C) two D) millions
C
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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.
During aerobic cellular respiration, the final electron acceptor is ________.
A. pyruvic acid B. FAD C. oxygen D. cytochrome C E. nitrate
A(n) ________ muscle has one nucleus per individual cell and is blunt ended with gap junctions between adjoining cells
Fill in the blank(s) with correct word
_________________ is the effect of chance on a populations allele frequencies
A. Natural selection B. Mutation C. Genetic drift D. Gene flow