F1 and F2 Backcrosses in the Hybrids Between Two Unnamed Genetically Distinct Species of Tropical Sea Urchins, Echinometra sp. A and Echinometra sp. C
نویسندگان
چکیده
منابع مشابه
Interspecific Hybridization and Backcrosses between Two Sibling Species of Pacific Sea Urchins (Genus Echinometra) on Okinawan Intertidal Reefs
M. Aminur Rahman and Tsuyoshi Uehara (2004) Interspecific hybridization and backcrosses between two sibling species of Pacific sea urchins (genus Echinometra) on Okinawan Intertidal Reefs. Zoological Studies 43(1): 93-111. Four genetically divergent Pacific sea urchins belonging to the genus Echinometra occur sympatrically and abundantly along the coast of Okinawa Island. Among them, the 2 most...
متن کاملStrong reproductive isolation between closely related tropical sea urchins (genus Echinometra).
Morphological, mitochondrial DNA, and single-copy nuclear DNA differences show that the tropical sea urchin Echinometra mathaei is composed of at least four independent gene pools. Evolutionary distance between species measured with restriction-site changes (for mitochondrial DNA) and thermal renaturation (for single-copy nuclear DNA) is 1%-3% nucleotide divergence. Thus these are the most clos...
متن کاملAdaptive evolution of sperm bindin tracks egg incompatibility in neotropical sea urchins of the genus Echinometra.
Bindin is a gamete recognition protein known to control species-specific sperm-egg adhesion and membrane fusion in sea urchins. Previous analyses have shown that diversifying selection on bindin amino acid sequence is found when gametically incompatible species are compared, but not when species are compatible. The present study analyzes bindin polymorphism and divergence in the three closely r...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
Interspecific Hybridization in Tropical Sea Urchins with Respect to Species Integrity and Aquaculture Potential
Significant differences in adult morphology, ecology, molecular phylogeny, mtDNA and loci coding for gamete recognition molecules have been combined to map the boundaries of four closely related Echinometra species occur abundantly all over the tropical Pacific. These species have recently been designated as Echinometra A, B, C and D [1– 11]. Consequently, mitochondrial DNA sequence data show t...
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ژورنال
عنوان ژورنال: Pakistan Journal of Biological Sciences
سال: 2003
ISSN: 1028-8880
DOI: 10.3923/pjbs.2003.1163.1175