Genetics Key Terms Crossword

Part of a chromosome that contains info to make a protein.
Different forms of the same gene e.g. tall and small height genes.
Sex cell (sperm/egg).
The genes in an organism e.g. TT, Tt, tt.
Physical appearance of the organism.
Expressed in the phenotype when present in the genotype. Represented by a capital letter e.g. T
Expressed in the phenotype when there is no dominant gene. Represented with a lower-case letter e.g. t
When the alleles are the same e.g. TT or tt. Also, called true breeding.
Alleles are not the same e.g. Tt. There is one dominant and one recessive gene. Also called a hybrid.
The process of asexually producing a group of cells (clones), all genetically identical, from a single ancestor.
The altering of the genetic make-up of an organism to produce desirable traits.
Any heritable change in DNA sequence.
Testing of the performance of offspring relative to their parents.
The X and Y chromosomes in human beings that determine the sex of an individual. Females have two X chromosomes in diploid cells; males have an X and a Y chromosome.