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Genotype: The genetic constitution of an organism ­ describing the alleles
that an organism contains.

Phenotype: Observable characteristics of an organism.

Gene: A section of DNA (sequence of DNA bases) that determines a single
characteristic of an organism.

Locus: Location of the gene on chromosome is called the locus.…

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Monohybrid Cross:

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Sex Inheritance and Sex Linkage:

Sex is determined by chromosomes not genes. Females have XX
chromosomes and males have XY chromosomes. Any gene carried on the X or Y
chromosome is said to be SEX-LINKED.

The Y chromosome is very small and contains few genes but the X chromosome


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