Genetics and heredity Crossword
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
 
 
Down: 1) male and female sex cells; sperm and egg cells in humans2) the name given to the structure of a DNA molecule that looks like a twisted ladder3) referring to an organism or cell with two sets of chromosomes, also represented by the symbol 2n4) the filed of biology devoted to understanding how traits are passed from parents to offspring5) a chart used to predict the probability of offspring inheriting a particular trait7) two different alleles for a trait9) two of the same alleles for a particular trait11) a chemical that starts or speeds up other reactions or processes in the body12) cell division in which one diploid (2n) cell produces four haplpoid (n) cells called sex cells or gametes. Gametes have half the number of chromosomes as a body cell of the parent Across: 6) when an organism inherits the same two alleles for a trait8) describes a trait that covers up, or dominates, another form of the trait; the phenotype or gene that is always seen9) a mixture of alleles; a cross between two parents with different allese for a trait; a cross between two varieties of plants or animals.10) a law that states that alleles will combine independently of other alleles on a chromosome.13) what an organism looks like as a consequence of its genotype; the physical expression on a genotype14) the particular alleles at a specified location present in an organism; the actual gene makeup of an organism15) cell division in which the nucleus divides once, and ends up with two identical cells. cell division done for the growth, repair, and maintenance of the organism.16) describes a gene or trait that will be hidden when the dominant gene or trait is present.
 

 

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