Biology, Friday Exit Ticket 1.11.19

Mendel's Second Law. Allele pairs separate independently of each other during gamete formation (meiosis). Meaning, different traits appear to be inherited separately.

• Law of Segregation

• Law of Independent Assortment

A heterozygous phenotype is somewhere between the two homozygous phenotypes. Neither allele is completely dominant or completely recessive

• Incomplete Dominance

• Codominant

• Dominant

• Recessive

Codominance

• Traits produced by two or more genes

• A heterozygous phenotype is somewhere between the two homozygous phenotypes. Neither allele is completely dominant or completely recessive

• Both alleles of a gene are expressed completely - neither allele is dominant or recessive.

• A.K.A. Cross breed. Result of mixing, through sexual reproduction, two animals or plants of different breeds

Polygenic Traits

• Trait that is expressed due to 2 or more genes working together.

• Genes that are located on the sex chromosomes.

• Mendel's first law. Organisms inherit 2 copies of each gene, one from each parent. Organisms donate only one copy of each gene in their gametes. Thus, the 2 copies of each gene segregate, or separate, during gamete formation (meiosis).

• A.K.A. Cross breed. Result of mixing, through sexual reproduction, two animals or plants of different breeds

A.K.A. Cross breed. Result of mixing, through sexual reproduction, two animals or plants of different breeds

• Hybrid

• Nicholas

• Quentin

• Hunter

Sex-Linked Genes

• Genes that are located on the sex chromosomes.

• Mendel's first law. Organisms inherit 2 copies of each gene, one from each parent. Organisms donate only one copy of each gene in their gametes. Thus, the 2 copies of each gene segregate, or separate, during gamete formation (meiosis).

• Trait that is expressed due to 2 or more genes working together.

• Both alleles of a gene are expressed completely - neither allele is dominant or recessive.

The true-breeding (homozygous) parent individuals from which F1 hybrid offspring are derived in studies of inheritance

• P generation

• F1 generation

• F2 generation

• F3 generation

F1 generation

• The first filial, hybrid (heterozygous) offspring arising from a parental (P generation) cross.

• The offspring resulting from interbreeding (or self-pollination) of the hybrid FF1 generation.

• The true-breeding (homozygous) parent individuals from which F1 hybrid offspring are derived in studies of inheritance