Heredity
the passing of physical characteristics from parents to offspring
gene
a factor that controls a trait; found on a section of DNA, on a chromosome
allele
different forms of a gene
dominant allele
an allele whose trait always shows up in the organism when it is present
recessive allele
an allele whose trait is hidden whenever the dominant allele is present
purebred
an organism that has two of the same alleles for a trait
hybrid
an organism that has two different alleles for a trait
probability
a number that describes how likely it is that an event will occur
punnet square
a chart that shows all of the possible combinations that can result from a genetic cross
genotype
an organism’s genetic makeup; its allele combinations; written as two letters
phenotype
an organism’s physical features; its appearance
homozygous
a genotype in which the two alleles of a gene are the same
heterozygous
a genotype in which the two alleles of a gene are different
asexual
Reproduction where organisms break off and mate with themselves Advantages: Efficient and fast; population grows rapidly in certain environments; no mate required. Disadvantages: Lack of genetic diversity makes populations vulnerable to environmental changes or diseases.
Sexual
Reproduction where organisms have to find mates to mate with producing genetically unique offspring who adapt to environmental conditions.
What controls the inheritance of traits in organisms?
Genes control the inheritance of traits in organisms which are certain dna located on chromosomes. These genes, inherited from parents, contain things that make up eye color, hair color, and much more.
What role does probability play in determining the traits of an organism?
Probability plays the role in predicting the offspring’s genetic features based on parental genetic contribution. People can calculate the probability by using dominant and recessive allele.
