Dihybrid Cross Calculator – Punnett Square
A dihybrid cross tracks how two separate genes, each with two alleles, are inherited together — extending the simple monohybrid Punnett square into a larger 16-square grid. The classic AaBb × AaBb cross (both parents heterozygous for two independently…
Punnett Square Calculator
A Punnett square is the classic grid tool used to predict the possible genotype and phenotype combinations of offspring from a genetic cross between two parents. This calculator covers the three standard monohybrid cross types — Aa × Aa, Aa × aa, and AA…
Hardy-Weinberg Equilibrium Calculator
The Hardy-Weinberg equation is one of the foundational tools of population genetics, describing what genotype frequencies to expect in a population that isn’t actively evolving at a given gene. Given just one number — the frequency of the dominant…
Allele Frequency Calculator
Allele frequency is the basic unit of measurement in population genetics — it describes how common each version of a gene is across an entire population, rather than describing any single individual. This calculator converts raw genotype counts (how many…
Generation Time Calculator
Generation time is the standard measure of how fast a bacterial population grows during exponential phase, and it’s calculated directly from colony-forming-unit (CFU) counts taken at two points on a growth curve. This calculator computes both the…
Log Reduction Calculator
Log reduction is the standard way microbiologists express how effectively a disinfectant, sterilization process, or antimicrobial treatment reduces a microbial population, because it captures enormous changes in scale far more cleanly than a raw…
DNA Concentration Calculator
Spectrophotometric quantification is the standard, fast way to estimate how much DNA is in a purified sample, and it comes down to a single, well-established conversion once you have an absorbance reading. This calculator converts a…
Cell Doubling Time Calculator
Doubling time is one of the first numbers researchers check when characterizing how a mammalian cell line grows, since it condenses an entire growth curve into a single, easily compared figure. This calculator works backward from an observed cell count…
Cell Dilution Calculator
Setting up a cell culture experiment almost always starts with diluting a concentrated stock suspension down to a specific target concentration, whether that’s for seeding a plate at a known density or preparing a sample for hemocytometer counting.…
Annealing Temperature Calculator
Every PCR reaction depends on picking an annealing temperature that lets primers bind specifically to their intended target sequence, without drifting into weak or nonspecific binding elsewhere on the template. The Wallace rule gives molecular biology…