WorksheetsGenetics Vocab
Total questions: 16
Worksheet time: 8mins
Sections of DNA found on chromosomes that give instructions for producing a trait.
Gene
Karyotype
Genotype
Dominant Allele
Different versions of the same gene. Ex- purple or white flowers
Homozygous
Gene
Allele
Pedigree chart
An organism’s genetic information.
Genotype
Phenotype
Homozygous
Heterozygous
An organism’s physical traits or appearance
Genotype
Phenotype
Heterozygous
Homozygous
Two identical alleles. Either two dominant or two recessive.
Example - HH or TT
Allele
Heterozygous
Homozygous
Pedigree Chart
Two different alleles. One dominant and one recessive.
Example - Tt or Hh
Genotype
Homozygous
Heterozygous
Gene
Creates a trait (phenotype) if ONE or TWO copies of the allele are present in an organism.
Genotype: uses capital letters - HH
Dominant Allelle
Recessive Allele
Chromosome
Codominance
Creates a trait (phenotype) ONLY when TWO copies of the allele are present.
Genotype: uses lower case letters - hh
Dominant Allele
Recessive Allele
Codominance
Incomplete Dominance
Shows BOTH dominant traits at once - like a combination
Example - a red and while flower producing a flower with some red petals and some white petals
Codominance
Incomplete Dominance
Heterozygous
Homozygous
Shows a BLEND or MIX of two dominant traits.
Example - a white and red flower producing a pink offspring
Codominance
Incomplete Dominance
Allele
Gene
A (a) is a person's physical trait which is coded for by their (b) or the actual make up of their genes.
(Choose Two Answers)
a. phenotype
a. genotype
b. phenotype
b. genotype
Which phenotype would be produced by the genotype: Hh
Dominant phenotype
Recessive Phenotype
Which phenotype would be produced by the genotype: tt
Dominant phenotype
Recessive Phenotype
Which phenotype would be produced by the genotype: AA
Dominant phenotype
Recessive Phenotype
A specific location on a pair of homologous chromosomes
nucleus
position
locus
phenotype
What is a chromosome?
a gene pair where each allele in the pair is the same version
long strand of DNA condensed (or supercoiled) into a stick-like structure
a gene pair where each allele in the pair is a different version
