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Mendel's Experiments definitions Flashcards

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Mendel's Experiments definitions
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  • Gregor Mendel


    A 19th-century scientist whose pea plant experiments established foundational principles of heredity, distinguishing between true breeding and hybrid plants through self and cross-fertilization.

  • Self Fertilization


    Fertilization where an organism uses its own pollen or sperm to fertilize its own ovules or eggs, resulting in offspring genetically similar to the parent.

  • True Breeding


    Organisms that, when self-fertilized, produce offspring with the same phenotype as the parent, indicating homozygosity for the trait.

  • Hybrid


    An organism resulting from the crossbreeding of two genetically distinct parents, often heterozygous, producing offspring with varied phenotypes.

  • Homozygous


    Having identical alleles for a specific gene, resulting in a uniform phenotype upon self-fertilization.

  • Phenotype


    Observable traits of an organism resulting from the interaction of its genetic makeup and environmental influences.

  • Heterozygous


    An organism with two different alleles for a specific gene, resulting in a dominant and a recessive allele pairing.

  • Monohybrids Organisms


    Heterozygous for a single trait, exhibiting one dominant and one recessive allele, resulting in varied offspring phenotypes upon self-fertilization.

  • Trait


    A characteristic or feature of an organism, determined by genes, that can be inherited and varies among individuals.

  • Gene


    A unit of heredity composed of DNA that determines specific traits by coding for proteins or functional RNA molecules.

  • Homozygous Dominant


    An organism with two identical dominant alleles for a specific trait, resulting in the dominant phenotype.

  • Alleles Variants


    of a gene that arise by mutation and are found at the same place on a chromosome, influencing specific traits.

  • Gametes


    Haploid cells involved in sexual reproduction, carrying half the genetic information of an organism, which combine during fertilization to form a diploid zygote.

  • Punnett Square


    A grid used to predict the genotypes of offspring from a genetic cross, showing how alleles from each parent combine.

  • Genotype


    The genetic makeup of an organism, consisting of the specific alleles inherited from its parents, which determines its potential traits.

  • Homozygous Recessive


    An organism with two identical recessive alleles for a specific trait, resulting in the expression of the recessive phenotype.

  • Cross Fertilization


    The fusion of gametes from two different parent organisms, transferring pollen from the male organ of one plant to the female organ of another.

  • Pollen


    Male gametophyte containing sperm cells, essential for fertilizing ovules in plants, enabling sexual reproduction and genetic diversity.

  • Male Organ


    The reproductive structure in male plants that produces and releases pollen for fertilization.

  • Female Organ


    The reproductive structure in plants where ovules are produced and fertilization occurs, typically involving the stigma, style, and ovary.

  • Filial Generation


    The offspring resulting from a cross of the parental generation, denoted as F1, and subsequent generations (F2, F3, etc.).

  • Parental Generation


    The initial set of organisms used in a genetic cross, whose offspring are studied to understand inheritance patterns.

  • F1 Generation


    The initial offspring resulting from a cross between two distinct parental lines, exhibiting a mix of parental traits.

  • F2 Generation


    The generation resulting from the self-fertilization or cross-fertilization of the F1 generation, exhibiting a 3:1 phenotypic ratio in Mendelian inheritance.