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#haplodiploidy

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Sex determination-l

Sex determination in Hymenoptera depends upon:

Hymenoptera including honeybees, ants and wasps lack heteromorphic sex chromosomes and determine sex via haplodiploid fertilization status conceptually distinct from X:A or ZZ/ZW. Diploid fertilized eggs heterozygous at complementary sex determiner locus csd produce females, either workers or queens, while haploid unfertilized eggs hemizygous become males drones. Molecular mechanism csd complementation regulates feminizer gene transformer ortholog splicing into female form producing DsxF, whereas hemizygous genotype yields male splicing and DsxM. Queen controls fertilization voluntarily releasing stored sperm, thereby controlling colony sex ratio.

Ref: Gilbert, Developmental Biology, 12th ed., Chapter 6: Fertilization-dependent sex in Hymenoptera.

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SPECIATION

Haplodiploidy is characteristic of:

Bees and ants reflects key principle in quiz on altrusim & hamilton rule+pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Bees and ants aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Bees and ants fits helps integrate natural selection,

Ref: Hamilton 1964, J Theor Biol, Inclusive Fitness rb>c.

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