PCS Liv Env Word Scramble
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Term | Definition |
genetics | scientific study of heredity |
true-breeding | allowed to self-pollinate producing identical offsprings |
trait | a specific characteristic that varies from one individual to another (example: seed color, plant height) |
hybrids | the offspring of crosses between parents with different traits |
gene | sequence of DNA that codes for a protein and determines a trait |
alleles | different forms of a gene |
segregation | separation of alleles during gamete formation |
gametes | sex cells |
probability | likelihood that a particular event will occur |
Punnett square | diagram showing the gene combinations that might result from a genetic cross |
homozygous | two identical alleles for a particular trait (example: TT or tt) |
heterozygous | two different alleles for a particular trait (example: Tt) |
phenotype | physical characteristic (you can see this - example: tall, short, blue, green) |
genotype | genetic makeup (can't see this - example: TT or Tt) |
independent assortment | independent segregation of genes during the formation of gametes |
incomplete dominance | one allele is not completely dominant over another (example: red roses bred with white roses = pink roses) |
codominance | both alleles of a gene contribute to the phenotype of the organism (example: AB blood) |
multiple alleles | three or more alleles of the same gene |
polygenic traits | traits controlled by two or more genes |
homologous | two sets of chromosomes (same number of chromosomes come from each parent) |
diploid | cell that contains both sets of homologous chromosomes; two sets (di = two) |
haploid | cell contains only a single set of chromosomes therefore a single set of genes; one set |
meoisis | process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes |
tetrad | structure containing 4 chromatids that forms during meiousis |
crossing-over | homologous chromosomes exchange portions of their chromatids during meiosis |
gene map | diagram showing the relative locations of each know gene on a particular chromosome |
dominant | traits expressed (you can see) |
reessive | traits hidden |
Law of Probability | used to predict results if large number of organisms are involved |
somatic cells | body cells |
Created by:
Ms.Sala
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