From The School of Biomedical Sciences Wiki
Jump to navigation
Jump to search
|
|
| Line 1: |
Line 1: |
| In humans and many other [[diploid|diploid]] organisms, provided there is no mutation, we have two [[alleles|alleles]] of each [[gene|gene]] on [[autosomal chromosomes|autosomal chromosomes]]. Recessive alleles are only expressed in an orangisms [[phenotype|phenotype]] if their [[genotype|genotype]] is [[homozygous|homozygous]] recessive (i.e. both recessive alleles are present). If an organism has a [[heterozygous genotype|heterozygous genotype]], containing one recessive allele, the phenotype of the other allele (the dominant allele) is expressed, and the organism is known as a carrier of the recessive trait. As a result, two carrier parents with seemingly normal phenotypes can have a child that has the recessive trait. There is only a 25% chance of this happening however, as the child must inherit the recessive allele from both the mother and the father<ref>King, W, S et al (2007). Essentials of Genetics. 8th ed. Pearson. p36-37.</ref>.
| | Plural of [[Recessive_allele|Recessive allele]] - see [[recessive allele|recessive allele]] for more information. |
| | |
| === References ===
| |
| | |
| <references />
| |
| | |
| <br>
| |
|
| |
|
| <br> | | <br> |
Latest revision as of 14:56, 21 October 2016
Plural of Recessive allele - see recessive allele for more information.