[17.1] studying inheritance
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what are alleles?
different forms of the same gene
what does homozygous mean?
a diploid organism having 2 identical alleles for a particular gene
what is a gene?
section of DNA on a chromosome which codes for a particular polypeptide
what does dominant mean?
the ability of one allele to determine the phenotype of a heterozygous individual
what does heterozygous mean?
a diploid organism having 2 different alleles for a particular gene
what does recessive mean?
an allele which does not determine the phenotype of an individual when a dominant allele is also present
what does phenotype mean?
the observable properties of an individual resulting from both genetic and environmental factors
what is a mutation?
a change in the DNA base sequence
what is the genotype?
the alleles present at a particular locus in an individual
what does codominance mean?
when both alleles contribute to the phenotype of an organism