1) What is Mendelian genetics? Answer must include dominance and recessivenessNote:
Genetic analysis predates Gregor Mendel, but Mendel's laws form the theoretical basis of our understanding of the genetics of inheritance.
Mendel made two innovations to the science of genetics:
1. developed pure lines
2. [ counted his results and kept statistical notes
Dominant - the allele that expresses itself at the expense of an alternate allele; the phenotype that is expressed in the F1 generation from the cross of two pure lines
Recessive - an allele whose expression is suppressed in the presence of a dominant allele; the phenotype that disappears in the F1 generation from the cross of two pure lines and reappears in the F2 generation www.ndsu.edu/pubweb/~mcclean/plsc431/mendel/mendel1.htm
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I'm sorry that that wasn't a good answer. Please hold on while I contact an expert.Weegy:
Mendel's First Law
"The alleles of a gene exist in pairs but when gametes are formed, the members of each pair pass into different gametes. [ Thus each gamete contains only one allele of each gene."
When a particular gene possesses both dominant and recessive alleles, it is possible for incomplete dominance to occur, where the organism at hand expresses a phenotype morphed by the expression of both the dominant and recessive alleles.
In essence, heterozygous (possessing opposing alleles Rr) organisms derived from homozygous (possessing the same alleles RR or rr) are created, they possess a phenotype different to that of both their parents.
Some of the following examples of monohybrid and dihybrid crossing illustrate this incomplete dominance.
Diploid organisms naturally have a maximum of 2 alleles for each gene expressing a particular characteristic, one deriving from each parent. In some cases, however, more than two types of allele can code for a particular characteristic, as is the case of genetic coding for blood type in humans. Their are up to 6 possible genotypes that code for the four blood groups, A, B, AB and O.
Read more : www.biology-online.org/2/5_mendelian_genetics.htm
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