PRESENTATION OUTLINE
Trait-A CHARACTERISTIC OR PROPERTY OF AN ORGANISM
Dominant trait-a genetic trait passed from parent to child that is more likely to be expressed
Chromosome-a tightly wound bundle of DNA and proteins found in the nucleus of most living cells
Heredity-the passing of traits from parent to offspring
Gene-the basic unit of heredity in a living organism; a segment of DNA or RNA
Recessive trait-a genetic trait that lacks the ability to manifest itself when a dominant gene is present
Allele-one member of a pair or series of genes on specific chromosomes in specific positions
Punnet square-A Punnett square is used to see the possible outcomes of parent's alleles in their offspring.
Phenotype-The color of our hair and eyes, the shape of our ears and nose are inherited from our parents. Observable traits like these are called a person’s phenotype. These traits are the result of the genetic code in our DNA.
Genotype-An organism’s genotype is its genetic makeup. Each parent contributes half of the child’s genes. There can be different combinations of genes in the offspring. Dominant traits are always
Heterozygous-Two rabbits are crossed. All outcomes in the Punnett square show traits with two different alleles (L and l). Two different alleles for a trait (L and l) represent a heterozygous trait.
Dna-A DNA molecule is shaped like a twisted ladder. DNA reproduces itself. Two identical DNA molecules are formed with the process of replication. Chromosomes are structures in the nucleus of almost every cell. They are made of DNA. Genes are pieces of chromosomes and tiny segments of DNA. Each gene has a fixed location on its chromosome and helps to specify a trait.
Prokaryote-Prokaryotes are single-celled organisms that do not have a nucleus. Prokaryotic cells are classified by the shape and arrangement of their cells. Prokaryotes include the domains Archaea and Bacteria.
Eukaryote-Animals, plants, fungi, and protists have eukaryotic cells. Eukaryotic cells contain membrane bound structures and a nucleus with DNA in it. Bacteria have prokaryotic cells. Prokaryotic cells do not contain a well-defined nucleus or membrane bound structures.
