Term
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Definition
| A pair of matings in one of which a female of genotype A mates with a male of genotype B, and in the other of which a female of genotype B mates with a male of genotype A. |
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Term
| Assumption supported by Gregor Mendel's experimental evidence |
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Definition
| Each parent contributes equally to offspring. |
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Definition
| An observable physical feature. Ex: flower color |
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Term
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Definition
| A specific form of a character. Ex: brown eyes and blue eyes |
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Definition
| pass from parent to offspring |
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Term
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Definition
| offspring of crosses between organisms differing in one or more traits |
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Term
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Definition
| unit of inheritance; a sequence on a DNA molecule that resides at the locus and encodes a particular character |
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Term
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Definition
| totality of all the genes of an organisms |
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Term
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Definition
| The alternate form of a genetic character found at a given locus on a chromosome. |
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Term
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Definition
| The two copies of a gene separate when an individual makes gametes |
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Term
| law of independent assortment |
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Definition
| Alleles of different genes assort independently during gamete formation. |
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Term
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Definition
| rare, stable, inherited changes in the genetic material |
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Term
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Definition
| Some alleles are neither dominant nor recessive. Ex: snapdragons with colors pink, white, or red in F2 Gen. |
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Term
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Definition
| Two alleles at one locus produce phenotypes that are both present in the heterozygote.Ex: ABO blood group system - three alleles at one locus |
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Term
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Definition
| A single allele can have multiple phenotypic effect. |
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Term
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Definition
| Phenotypic expression of one gene influenced by another gene. Ex: Coat color in Labradors. |
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Term
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Definition
| Proportion of individuals with a certain genotype that show the phenotype. |
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Term
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Definition
| Degree to which genotype is expressed in an individual |
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Term
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Definition
| Formed by all of the loci on a chromosome |
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Term
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Definition
| (rare) genes at different loci on the same chromosome do sometimes separate |
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Term
| recombinant frequencies (the how-to) |
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Definition
divide number of recombinant offspring by total number of offspring.
*RF are greater for loci that are farther apart. |
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Term
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Definition
| Recombinant frequencies used to show the arrangement of genes along a chromosome |
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Term
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Definition
| a character governed by loci on the sex chromosomes. Ex. eye color in drosophila |
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Definition
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Definition
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Term
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Definition
| a projection that initiates contact between bacterial cells |
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Term
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Definition
| Cytoplasmic bridge that forms between cells |
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Term
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Definition
| Small circular chromosomes; bacteria has these |
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