A large population of animals is genotyped for many SNP loci across the nuclear genome. A high level of polymorphism is found at

Question

A large population of animals is genotyped for many SNP loci across the nuclear genome. A high level of polymorphism is found at SNP loci over most of the genome. But on one chromosome, a particular long haplotype (a set of specific SNP alleles) is found at high frequency, and is homozygous in many individuals. Which of the following circumstances could help explain this situation? Select all correct answers; partial negative scoring for incorrect answers.
A) The chromosome carries a transmission ratio distortion system.
B) The chromosome has a higher mutation rate than the rest of the genome.
C) The chromosome carries an allele that was recently subject to strong positive selection.
D) The chromosome carries an inversion relative to other homologous chromosomes in the population.
E) The population was subject to a recent bottleneck and founder effect.
F) The chromosome was recently introduced from a different species.

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