Biology Unit 5 Vocab Crossword Puzzle

QUESTIONS LIST:

• rna : a nucleic acid similar to dna using ribose for the sugar and the nitrogen base uracil in place of thymine.
• chromosome : a "threadlike" structure in the nucleus, composed of dna, and contains the heredity information for the organism.
• gene : a portion of dna which codes a specific hereditary trait.
• gamete : a reproductive cell produced by the male or female parent, which contains the haploid number of chromosomes.
• probability : the chance that a given event will occur usually expressed between the number 0 (will not occur) and 1 (the event will occur).
• dna : a giant molecule consisting of the sugar deoxyribose, phosphates and nitrogen bases; contain the coded genetic information.
• hybrid : an offspring from a cross between parents which has different phenotypes for a specific trait.
• recessive : a gene or trait which is masked when a dominant allele is present.
• homozygous : refers to a pair of genes in an organism which are identical in the way they influence a trait.
• genotype : the genes present in an organism.
• deoxyribose : a five-carbon sugar.
• allele : alternative forms for a specific gene.
• deviation : variation from the predicted values.
• mitosis : the part of the life cycle of a cell where the cell divides into two exact copies of the original cell.
• pure0bred : a phenotype (trait) resulting from homozygous genes from the offspring of true breeding.
• phenotype : the outward appearance of the organism which is the product of gene action.
• trait : a genetic characteristic of the individual.
• dominant : in a pair of genes, one may prevent the allele from being expressed.
• meiosis : a type of cell division used to produce gametes and there is a reduction in the chromosome number from the diploid to the haploid number.