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  2. Drosophila melanogaster - Wikipedia

    en.wikipedia.org/wiki/Drosophila_melanogaster

    Vestigial wings are those not fully developed and that have lost function. Since the discovery of the vestigial gene in Drosophila melanogaster, there have been many discoveries of the vestigial gene in other vertebrates and their functions within the vertebrates. [70] The vestigial gene is considered to be one of the most important genes for ...

  3. Seckel syndrome - Wikipedia

    en.wikipedia.org/wiki/Seckel_syndrome

    Seckel syndrome, or microcephalic primordial dwarfism (also known as bird-headed dwarfism, Harper's syndrome, Virchow–Seckel dwarfism and bird-headed dwarf of Seckel [1]) is an extremely rare congenital nanosomic disorder. Inheritance is autosomal recessive. [2]

  4. Vestigiality - Wikipedia

    en.wikipedia.org/wiki/Vestigiality

    In humans, the vermiform appendix is sometimes called a vestigial structure as it has lost much of its ancestral digestive function.. Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [1]

  5. Compound heterozygosity - Wikipedia

    en.wikipedia.org/wiki/Compound_heterozygosity

    In medical genetics, compound heterozygosity is the condition of having two or more heterogeneous recessive alleles at a particular locus that can cause genetic disease in a heterozygous state; that is, an organism is a compound heterozygote when it has two recessive alleles for the same gene, but with those two alleles being different from each other (for example, both alleles might be ...

  6. Antley–Bixler syndrome - Wikipedia

    en.wikipedia.org/wiki/Antley–Bixler_syndrome

    Antley–Bixler syndrome is inherited in an autosomal recessive pattern, which means the defective gene is located on an autosome, and two copies of the gene (one inherited from each parent) are required to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene but ...

  7. Hall-Riggs syndrome - Wikipedia

    en.wikipedia.org/wiki/Hall-Riggs_syndrome

    It is an autosomal recessive genetic disorder, meaning both parents must carry the gene in order for their offspring to be affected. [1] Common characteristics of Hall-Riggs syndrome include: [3] [4] spondyloepimetaphyseal dysplasia; short stature; shortened limbs, fingers, and toes; microcephaly; scoliosis; seizures; widened nasal bridge and mouth

  8. Pontocerebellar hypoplasia - Wikipedia

    en.wikipedia.org/wiki/Pontocerebellar_hypoplasia

    Pontocerebellar hypoplasia (PCH) is a heterogeneous group of rare neurodegenerative disorders caused by genetic mutations and characterised by progressive atrophy of various parts of the brain such as the cerebellum or brainstem (particularly the pons). [1] Where known, these disorders are inherited in an autosomal recessive fashion. There is ...

  9. Chondrodystrophy - Wikipedia

    en.wikipedia.org/wiki/Chondrodystrophy

    Chondrodystrophy has an autosomal recessive pattern of inheritance. Chondrodystrophy is an autosomal recessive disorder, meaning that in order for this disease to be expressed, the affected individual must possess two copies of the allele for the disorder. The inheritance of the chondrodystrophy gene is as follows: