171 results found

Search Results for: cross

Cross-linking

Cross-linking Definition Cross-linking, in general, means the forming of cross-links between the joining structures. In... Read More

Genotypic ratio

Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... Read More

Test cross

Definition noun Crossing an organism with dominant genotype to a recessive homozygote for a specific phenotype in order to... Read More

Phenotypic ratio

Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More

Hybrid

Definition noun, plural form: hybrids (reproductive biology) The offspring resulting from the cross between parents of... Read More

Cross-sections

Cross-section (Science: physics) Usually refers to the (apparent) area presented by a target particle to an oncoming... Read More

Cross

Cross 1. Any figure in the shape of a cross formed by two intersecting lines. Synonym: crux. Synonym: crux of heart. 3. a... Read More

Cross-section

Cross-section (Science: physics) Usually refers to the (apparent) area presented by a target particle to an oncoming... Read More

Cross-pollination

Definition noun (botany) A type of pollination in which the pollen from the anther of a flower is transferred to the stigma... Read More

Monohybrid cross

Definition noun A genetic cross between homozygous individuals but with different alleles for a single gene locus of... Read More

Muscle

Muscle cells are specialized to generate force and movement. There are three types of muscle tissue: (1) skeletal muscle,... Read More

Backcross

Definition verb To cross a hybrid (i.e. offspring of the F1 generation) with its parent noun (1) The offspring produced... Read More

Punnett Square

Punnett Square Definition A tool that helps to show all possible allelic combinations of gametes in a cross of parents with... Read More

Crossbreed

Definition noun, plural: crossbreeds The offspring of two purebred individuals from different varieties or breeds verb (1)... Read More

Cross-sectional study

Cross-sectional study (Science: epidemiology) a study in which the presence or absence of disease or other health-related... Read More

Intercross

Intercross The process or result of cross fertilization between different kinds of animals, or different varieties of... Read More

First filial generation

Definition noun (genetics) The filial generation comprised of offspring(s) resulting from a cross between two individuals... Read More

Second filial generation

Definition noun (genetics) The filial generation comprised of offspring(s) resulting from a cross between two individuals... Read More

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Longitudinal section

Longitudinal Section Definition To describe the direction of movements and location of different body structures, a... Read More

Monohybrid

Definition noun, plural: monohybrids (1) Monohybrid cross, i.e. the cross between parents with different alleles for a... Read More

Crossbreeding

Definition noun The act or process of producing offspring by mating purebred individuals of different breeds or... Read More

Filial generation

Definition noun, plural: filial generations (genetics) Any generation resulting from a genetically controlled mating... Read More

Movement of Molecules Across Cell Membranes

Diffusion Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower... Read More

Parental generation

Definition noun (genetics) The first set of parents crossed in which their genotype is the basis for predicting the... Read More

Mule

Definition noun, plural: mules (zoology) A sterile hybrid offspring, especially of a male donkey and a female horse (botany)... Read More

Parenchyma

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Interspecific hybridization

'''Interspecific hybridization Crossing of two species that are from within the same genus. Examples are zebra/donkey cross... Read More

Sympatric speciation

Speciation is a process of evolution through which two different existing populations evolve and a distinct species form. It... Read More

Codominance

Codominance Definition Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully... Read More

Cell membrane

Cell Membrane Definition Just like any non-living body possesses a plastic or paper packaging material that keeps the... Read More

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... Read More

Self pollination

Definition noun (botany) A type of pollination in which the pollen from the anther of the flower is transferred to the... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Pollen Grain

What are Pollen Grains? Plants are unique structures and so they carry out mechanisms in special ways. Fertilization in... Read More

Hybrid Sterility

'''hybrid sterility (genetics) It refers to the offspring of a successful primary cross, however the secondary cross would... Read More

Probability

Probability Definition How do you define probability? In science, probability is a measurement tool that calculates the... Read More

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that were initially... Read More