Genetics: Dr. Brooks Exam 1 Questions and Answers 100% Verified

Trait -ANSWER_ Any characteristic that an organism displays Genomic imprinting -ANSWER_ A segment of DNA is marked and the effect is maintained throughout the life of the organism inheriting the marked DNA Maternal Effect -ANSWER_ The genotype of the mother directly determines the phenotype of her offspring. Test cross -ANSWER_ Mating between an individual that is heterozygous for two or more genes and one that is homozygous recessive for the same genes Crossing over -ANSWER_ Non sister chromatids of homologous chromosomes exchange DNA segments Law of Segregation -ANSWER_ Genes separate from each other during transmission from parent to offspring Law of Independent Assortment -ANSWER_ The separation of any pair of genes is unrestricted by the separation of other gene pairs. Pedigree -ANSWER_ An orderly diagram of a families relative genetic features extending through multiple generations. Karotype -ANSWER_ An organized representation of the chromosomes within a cell Deoxyribonucleic Acid -ANSWER_ Polymer of nucleotides and the genetic material in all organisms Chromosome -ANSWER_ Structure within living cells that contains genes Chromatin -ANSWER_ DNA-protein complex in eukaryotes Incomplete penetrance -ANSWER_ In some instances a dominant allele does not influence the outcome of a trait in a heterozygote Overdominance -ANSWER_ The heterozygote is more vigorous than both of the corresponding homozygotes Pleiotrophy -ANSWER_ Multiple effects of a single gene on the phenotype of an organism