chapter 11 vocab

Chapter 11 Vocabulary

Genetics-Scientific study of hereditary





http://www.ornl.gov/sci/techresources/Human_Genome/genetics.shtml

True-Breeding- Organisms that produce offspring identical to themselves if allowed to self pollinate.








http://biology.about.com/bldeftruebreed.htm

Trait- Specific characteristics that varies from one individual to another.

http://webspace.ship.edu/cgboer/genpsytraits.html

Hybrid- Offspring of crosses between parents with different traits.

http://www.biology-online.org/dictionary/Hybrid

Gene- Sequence of DNA that codes fro a protein and thus determines a trait.

http://www.genetics.gsk.com/kids/genes01.htm

Allele- One of a number of different forms of a gene

http://biology.about.com/od/geneticsglossary/g/alleles.htm

Segregation- Separation of alleles during gamete formation.

http://biology.about.com/library/glossary/bldefmenlawseg.htm

Gamete- Specialized cell involved un sexual reproduction

http://www.biology-online.org/dictionary/Gamete

Probability- Likelihood that a particular event will occur.










http://www.mathgoodies.com/lessons/toc_vol6.html



Punnett square- Diagram showing the gene combinations that might result from a genetic cross.

http://www.athro.com/evo/gen/punexam.html

Homozygous- Term used to refer to an organisms that has two identical alleles fro a particular trait.

http://biology.about.com/bldefhomozyg.htm

Heterozygous-Term used to refer to an organism that has two different alleles of the same trait.

http://biology.about.com/bldefhetzyg.htm

Phenotype-Physical characteristics of an organism.











http://www.brooklyn.cuny.edu/bc/ahp/BioInfo/SD.Geno.HP.html

Genotype- genetic makeup of an organism

http://www.iscid.org/encyclopedia/Genotype

Homologous-Chromosomes that each have a corresponding chromosome from the opposite-sex parent










http://www.merriam-webster.com/dictionary/homologous

Diploid- A cell that contains both sets of homologous chromosomes
http://www.biology-online.org/dictionary/Diploid


Haploid- A cell that contains only a single set of chromosomes and therefore only a single set of genes.

http://www.biology-online.org/dictionary/Haploid

Meiosis- Process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.

http://www.accessexcellence.org/RC/VL/GG/meiosis.html

Tetrad-Structure containing 4 chromatids that forms during meiosis.

http://answers.yahoo.com/question/index?qid=20061030200732AAJD3T4

Crossing-over- Homologous chromosomes exchange portions of their chromatids during meiosis.

http://www.accessexcellence.org/RC/VL/GG/comeiosis.html

Gene Map- Diagram showing the relative locations of each known gene on a particular chromosome.

http://www.msnbc.msn.com/id/22827585/