Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
genetics
Genetics
| Term | Definition |
|---|---|
| Gene | a segment of DNA that codes for a particular protein, which in turn codes for a trait or characteristic |
| chromosome | composed of genes; when an organism reproduces the chromosome is what carries the genetic information from parent to offspring |
| allele | the two forms of a gene, (tall or short- gene for height) |
| diploid | cells with 2 copies of each chromosome, having received one copy from each parent |
| haploid | cells with 1 copy of each chromosome |
| somatic cell | a regular body cell of an organism. contains 2n-diploid |
| gamete | the sex cell of an organism (sperm or egg) that contains only 1 copy of an allele for a given trait n-haploid |
| homologous chromosomes | the 2 copies of each chromosome in a diploid cell |
| dominant | the stronger form of an allele that is always expressed, represented by an upper case letter. |
| recessive | the weaker form of an allele that is hidden by the dominant allele if it is present, represented by a lower case letter |
| homozygous | an allelic combination where both alleles are dominant (RR) or both alleles are recessive (rr), also called true breeding |
| heterozygous | an allelic combination where one of each type of allele is present, also called a hybrid |
| phenotype | the physical appearance for an organism |
| genotype | the actual genetic make-up of an organism |
| cross | refers to the purposeful reproduction of two organisms (ex. tall plant and a short plant) |
| probability | likelihood or chance of getting an offspring with a certain characteristic |
Created by:
2015bernarde
Popular Biology sets