Unknown

Dataset Information

0

The genomes of a monogenic fly: views of primitive sex chromosomes.


ABSTRACT: The production of male and female offspring is often determined by the presence of specific sex chromosomes which control sex-specific expression, and sex chromosomes evolve through reduced recombination and specialized gene content. Here we present the genomes of Chrysomya rufifacies, a monogenic blow fly (females produce female or male offspring, exclusively) by separately sequencing and assembling each type of female and the male. The genomes (>?25X coverage) do not appear to have any sex-linked Muller F elements (typical for many Diptera) and exhibit little differentiation between groups supporting the morphological assessments of C. rufifacies homomorphic chromosomes. Males in this species are associated with a unimodal coverage distribution while females exhibit bimodal coverage distributions, suggesting a potential difference in genomic architecture. The presence of the individual-sex draft genomes herein provides new clues regarding the origination and evolution of the diverse sex-determining mechanisms observed within Diptera. Additional genomic analysis of sex chromosomes and sex-determining genes of other blow flies will allow a refined evolutionary understanding of how flies with a typical X/Y heterogametic amphogeny (male and female offspring in similar ratios) sex determination systems evolved into one with a dominant factor that results in single sex progeny in a chromosomally monomorphic system.

SUBMITTER: Andere AA 

PROVIDER: S-EPMC7519133 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

altmetric image

Publications

The genomes of a monogenic fly: views of primitive sex chromosomes.

Andere Anne A AA   Pimsler Meaghan L ML   Tarone Aaron M AM   Picard Christine J CJ  

Scientific reports 20200925 1


The production of male and female offspring is often determined by the presence of specific sex chromosomes which control sex-specific expression, and sex chromosomes evolve through reduced recombination and specialized gene content. Here we present the genomes of Chrysomya rufifacies, a monogenic blow fly (females produce female or male offspring, exclusively) by separately sequencing and assembling each type of female and the male. The genomes (> 25X coverage) do not appear to have any sex-lin  ...[more]

Similar Datasets

| S-EPMC3084112 | biostudies-literature
| S-EPMC5052041 | biostudies-literature
| S-EPMC2481430 | biostudies-literature
| S-EPMC7415349 | biostudies-literature
| S-EPMC6727804 | biostudies-literature
| S-EPMC6281344 | biostudies-literature
| S-EPMC3566845 | biostudies-other
| S-EPMC6723020 | biostudies-literature
| S-EPMC6095824 | biostudies-literature
| S-EPMC4414376 | biostudies-literature