Characteristics that are inherited.

The study of Heredity.

Sex cells.

Male gamete

Female gamete

For humans, which individual genetically determines the sex of the offspring?

Male sex chromosomes are

Female sex chromosomes are

What organism did Gregor Mendel focus his studies on regarding inheritance?

Two alleles for each trait must separate when gametes are formed. A parent will pass down AT RANDOM only one allele for each trait.

Genes for different traits are inherited independently of one another.

Cross involving one trait.

Cross involving two traits.

Distinct forms of a gene.

The allele that has the ability to mask the expression of the other allele; represented by an uppercase letter.

The allele that will be masked by the other allele; represented by a lowercase letter.

Genetic combination that results in a trait.

Physical expression of a trait.

Examples of phenotypes

Examples of genotypes

Having two identical alleles for a trait.

Having two different alleles for a trait.

Examples of homozygous genotypes

Examples of heterozygous genotypes

First step in solving a punnett square problem.

Second step in solving a punnett square problem.

Third step in solving a punnett square problem.

Four step in solving a punnett square problem.

Fifth step in solving a punnett square problem.

When reading the problem for a punnett square you should

What "extra" step must you do when completing a punnett square for a dibybrid cross?

What is the FIRST set of gamete alleles that you'd create for this parental dihybrid genotype?

What is the SECOND ("O" of F.O.I.L.) set of gamete alleles that you'd create for this parental dihybrid genotype?

What is the THIRD ("I" of F.O.I.L.) set of gamete alleles that you'd create for this parental dihybrid genotype?

What is the FOURTH ("L" of F.O.I.L.) set of gamete alleles that you'd create for this parental dihybrid genotype?

Inheritance pattern in which there are two alleles; one dominant and one recessive.

Inheritance pattern in which there are two alleles; BOTH are dominant. The heterozygote organism shows a BLEND of the different alleles.

Inheritance pattern in which there are two alleles; BOTH are dominant. The heterozygote organism shows each different allele distinctly in its phenotype.

Inheritance pattern in which genes are linked to the X or Y chromosome.

Inheritance pattern in which there are MORE than two alleles controlling a trait. Other inheritance patterns may be involved in the expression of the individual alleles.

Type of inheritance expression responsible for AB type blood.

Type of inheritance expression responsible for A, B and O type blood.

Inheritance pattern in which one set of alleles controls the expression of another set of alleles. These problems will always need to be worked out as dihybrids.

Mode of inheritance in which the additive effect of two or more genes determines the single phenotypic characteristic.

What is this diagram called?

Which symbol(s) demonstrates an uneffected (non-carrier) female?

Which symbol(s) demonstrates a heterozygous (carrier) female?

Which symbol(s) demonstrates an effected female?

Which symbol demonstrates a heterozygous male?

Which symbol demonstrates an effected male?

Which symbol demonstrates an uneffected male?

Which symbol demonstrates monozygotic (identical) twins?

Which symbol demonstrates dizygotic (fraternal) twins?

On pedigrees, Roman numerals are used to designate

On pedigrees, Arabic numbers are used to designate