Bio 182 Asu Exam 1 With Correct Answers

Heterozygous {Ans: When an individual carries two different alleles for a gene.}Heritable {Ans: When the variation in a phenotype depends on the genes}Mutation {Ans: An error in the sequence of the nucleotides when copying DNA}Meiosis {Ans: A process in which a diploid cell produces four haploid cells}Zygote {Ans: The diploid cell that results from fertilization between sperm and egg}Recessive {Ans: When two copies of an allele are needed to express a certain phenotype.}Gamete {Ans: A haploid cell that develops into a sperm or an egg}Gene {Ans: A linear sequence of DNA that codes for a certain protein.}Allele {Ans: A form of a gene that affects the way an organism looks or behaves}Trait {Ans: A characteristic of an organism that varies genetically.}Genotype {Ans: The set of alleles that determine how an organism looks or behaves}Phenotype {Ans: A description of an organism's appearance or behavior.}Haploid {Ans: When a cell contains only one copy of each chromosome.}Locus {Ans: A place on a chromosome where a certain gene occurs}Homozygous {Ans: When an individual carries two identical alleles for a gene.}Chromosome {Ans: A highly condensed molecule of DNA that