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Biology
Explore population growth, genetics, cell counts, ecology, laboratory measurements, and biological rates.
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Biology directory
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Population Growth Calculator
Compound a constant annual population growth rate over the selected horizon and calculate change, multiple, and logarithmic doubling time.
Assay Plate Capacity Calculator
Scale the assay plate plan from samples, replicates and controls, add explicit pipetting overage, apply the entered concentration ratio, and reconcile stock, diluent,...
Hardy-Weinberg Lab Analysis Calculator
Derive the observed allele frequency from genotype counts and compare the complete observed sample with Hardy-Weinberg expectations at a selected reference frequency.
Hardy-Weinberg Growth Calculator
Apply recurrent migration to the allele frequency once per generation, independently compound the entered population size, and then apply Hardy-Weinberg genotype proportions...
Hardy-Weinberg Population Calculator
Calculate expected Hardy-Weinberg genotype counts from an entered allele frequency and compare them with three entered observed genotype counts.
Hardy-Weinberg Genotype Rate Calculator
Apply p plus q equals one and the p-squared, two-p-q, q-squared expansion, while keeping entered observations and implied allele frequency auditable.
Hardy-Weinberg Calculator
Apply p plus q equals one and the Hardy-Weinberg genotype proportions p squared, 2pq, and q squared to the entered population.
Hardy-Weinberg Scenario Comparison Calculator
Calculate complete expected genotype counts for two independent p-frequency and population scenarios before applying optional entered planning costs.
Hardy-Weinberg Sampling Calculator
Calculate expected genotype shares and counts from p and q, derive the observed sample allele frequency, and apply a finite-population correction to the binomial...
Cell Seeding Volume Calculator
Convert viable stock concentration and target cells per well into stock, medium and total seeding-mixture volumes for the planned culture wells.
Allele Frequency Migration Trend Calculator
Model a Hardy-Weinberg migration trend by applying a constant migrant-pool allele frequency and share once per generation, then recalculating genotype expectations.
qPCR Master Mix Planner Calculator
Plan qPCR wells and common master-mix volume from samples, technical replicates, standards, controls, template exclusion, overage and plate capacity.
Cell Doubling Time Calculator
Use logarithmic growth between two positive cell counts to estimate the number of doublings and average doubling time.
Colony Forming Unit Dilution Calculator
Convert a colony count, plated volume and cumulative dilution into the estimated original-sample CFU concentration while preserving countability references.
Punnett Square Offspring Rate Calculator
Calculate genotype and phenotype probabilities from two parental allele distributions and display the complete Punnett-square outcome rates.
Sample Pooling Concentration Calculator
Combine equal-volume source aliquots, retain an explicit archive volume, apply handling loss, and reconcile recovered analyte mass and pool volume with the entered...
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Connect biological counts to the correct scale
Biology calculators describe growth, populations, genetics, diversity, laboratory counts, concentrations, and biological rates. Each model operates at a particular biological scale and depends on how observations were collected.
Define the population, sample, volume, generation, or observation period represented by every count. Natural variation, interactions, sampling bias, and changing environments can make a deterministic projection less certain than its displayed precision suggests.
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Which biology calculator should I use?
| Calculator | Main inputs | Main outputs | Best for |
|---|---|---|---|
| Population Growth Calculator | Initial population, growth rate, and time | Projected population | Simple population projection |
| Hardy-Weinberg Calculator | Allele or genotype frequencies | Expected genotype frequencies | Equilibrium genetics |
| Cell Doubling Time Calculator | Initial count, final count, and elapsed time | Growth rate and doubling time | Cell-culture growth |
| Hardy-Weinberg Sampling Calculator | Sample size and expected frequencies | Expected genotype counts | Sampling-plan expectations |
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