Science Test- Genetics

lifeheto's version from 2015-05-17 22:30

Section 1

Question Answer
nucleotidethe basic structural unit of nucleic acids such as DNA
alleledifferent forms of the same gene
genotypethe combination of alleles and organisn has
phenotypethe organisms actual observable form of a trait
traitan observable characteristic of an organism
inheriteda characteristic derived from ones parents or ancestors
dominantmost powerful, over powers recessive allele
recessivea form of a gene that is always hidden when the dominant allele is present and will only appear when with another recessive allele
genethe units used to determine traits
homozygous2 of thesame alleles
heterozygous2 differnt alleles

Section 2

Question Answer
what are the 3 basic parts of a nucliotidenitrogenous base, a sugar, and a phosphate group
what are the 4 nitrogenous basescytosine, thymine, adenine, guanine
what is the shape and structure of DNAshape- double helix; structure- chromosome
What nitrogenous bases pair with each otheradenine and thymine ; cytosine and guanine
where is DNA foundthe nucleous of a cell
how are an individuals traits inheretedgenes

Section 3

Question Answer
cytoskeletonprovides support stuctures for the cell body
rough ERholds ribosomes
smooth ERaids inthe protien synthesis by producing steroids and hormones and regulating calcium levels
mitochondriaproduce energy for the cell
golgi apperatusprocesses products from the endoplasmic reticulum
vaculestores food and other materials needed by the cell
nucleouscontains DNA