Genes, alleles, dominant and recessive traits, genotype and phenotype, with Punnett square practice. There are 4 sheets here: vocabulary match, fill in the blanks, true or false and punnett squares. Pick one from the tray, print it, and add its answer key as a second page if you want one.
Worksheets
NameDate
Genetics vocabulary
Write the letter of the matching meaning next to each word.
WordMeaning
phenotype
heterozygous
dominant
homozygous
gene
allele
genotype
recessive
Atwo identical alleles
Bsection of DNA that codes for a trait
Callele hidden by a dominant one
Done form of a gene
Ethe alleles an organism has
Fthe trait you can see
Gallele that shows when present
Htwo different alleles
Using these sheets
New problems gives the same kind of sheet with different numbers, so you can print one for class and another for homework.
The answer key matches the sheet on screen, including after you make new problems.
Sheets print on US Letter paper. On A4, choose “Fit to printable area” in the print dialog.
Questions
What grade are these genetics worksheets for?
They suit grades 7 to 10. Each sheet in the tray practices it a different way, so you can pick the one that fits.
Is there an answer key?
Yes. Tick “add the answer key as page 2” before printing, or turn on Answer key to check work on screen.
Can I print more than one version?
Yes. Press New problems for a fresh set of the same kind, then print again. The answer key changes with it.
Do I need an account to print?
No. The sheets print straight from this page, free, with no sign-up.