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Maternal Effect definitions

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  • Maternal Effect
    A non-Mendelian inheritance pattern where the mother's genotype alone determines the offspring's phenotype.
  • Non-Mendelian Inheritance
    An inheritance pattern that does not follow Mendel's laws, often involving factors beyond the offspring's genotype.
  • Genotype
    The genetic makeup of an organism, consisting of specific alleles inherited from both parents.
  • Phenotype
    The observable traits or characteristics of an organism, influenced by genetic and sometimes maternal factors.
  • Allele
    A variant form of a gene, such as dominant or recessive, that contributes to genetic diversity.
  • Dominant Allele
    A gene variant that masks the effect of a recessive allele and determines the trait when present.
  • Recessive Allele
    A gene variant whose effect is masked by a dominant allele and only expressed when two copies are present.
  • Meiosis
    A two-stage cell division process producing haploid cells, separating alleles and reducing chromosome number.
  • DNA Replication
    The process of copying genetic material before cell division, ensuring each cell receives identical alleles.
  • Gene Product
    A molecule, such as mRNA or protein, produced from gene expression and capable of influencing traits.
  • Heterozygous
    A genetic condition where two different alleles for a gene are present in an individual.
  • Homozygous Dominant
    A genotype with two identical dominant alleles, often resulting in a dominant trait.
  • Homozygous Recessive
    A genotype with two identical recessive alleles, typically expressing the recessive trait if not masked.
  • Shell Coiling
    A snail trait where the direction of the coil is determined by the mother's genotype, not the offspring's.
  • mRNA
    A type of gene product that can remain in the egg and influence the early development of the offspring.