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Journal Articles
The American Biology Teacher. 2010; 72112–15 doi: https://doi.org/10.1525/abt.2010.72.1.4
Published: 01 January 2010
...: yampolsk@etsu.edu . Natural selection recessive alleles Drosophila homozygosity biology teaching References Ashburner M. Golic K.G. & Hawley R.S. 2005 ). Drosophila: A Laboratory Handbook, 2nd Ed . Cold Spring Harbor, NY : Cold Spring Harbor Laboratory Press...
Journal Articles
The American Biology Teacher. 2014; 769576–581 doi: https://doi.org/10.1525/abt.2014.76.9.2
Published: 01 November 2014
... death in sports, including appropriate standards for working with athletes with sickle cell trait ( Casa et al., 2012 ). Homozygosity for the altered β hemoglobin (SS; sickle cell anemia) causes severe health risks and is often lethal: in sub-Saharan Africa, an estimated 50–80% of individuals with...
Journal Articles
The American Biology Teacher. 2007; 695280–286 doi: https://doi.org/10.2307/4452157
Published: 01 May 2007
... basic genetic principles of heterozygosity and homozygosity. Figure 3. The Polymerase chain reaction (PCR) requires a DNA template, single stranded primers that are specific for the region of interest, and deoxynucleotides.The template is denatured by heating; cooling allows primers toanneal to...
Journal Articles
The American Biology Teacher. 2004; 666435–440 doi: https://doi.org/10.2307/4451710
Published: 01 August 2004
...; however, the association with Apo genes is performed and the individual isfound E4 and Alzheimer's has been demonstrated and positive; yearly colonoscopy exams recommended the individual decides to be tested for that. The 30 years - a new camera procedure is added to the test indicates ApoE4 homozygosity...
Journal Articles
The American Biology Teacher. 2003; 65141–46 doi: https://doi.org/10.2307/4451431
Published: 01 January 2003
... case in many science courses, centered on the continuing struggle between content-driven lecture topics and the clock-cramming topics such as Punnett squares, homozygosity, laws of independent assortment, and pedigree analysis into the 150 minutes allotted for Mendelian genetics. The tension produced...
Journal Articles
The American Biology Teacher. 1999; 613207–213 doi: https://doi.org/10.2307/4450652
Published: 01 March 1999
... consequent meta- bolic block: substrate 1 is not converted to melanin. Similarly, gene B in another pigment pathway is responsi- ble for the synthesis of enzyme "B" which converts substrate 2 to yellow pigment. Homozygosity for the b allele (which produces no enzyme "B") results in a metabolic block in that...
Journal Articles
The American Biology Teacher. 1997; 598472–479 doi: https://doi.org/10.2307/4450361
Published: 01 October 1997
... offspring may exhibit inbreeding depres- sion due to homozygosity at this locus. Since individ- uals from a regularly cross-pollinating population should be heterozygous at many loci, self-pollinating them should produce marked inbreeding depression. On the other hand, individuals from a regularly self...
Journal Articles
The American Biology Teacher. 1995; 577438–442 doi: https://doi.org/10.2307/4450034
Published: 01 October 1995
...). Inbreeding and homozygosity in the fern Ceratopteris pteridoides (Hooker) Hieronymus (Parkeriaceae). Botani- cal Journal of the Linnean Society, 83, 1-13. Warne 1 83 Botanical Journal of the Linnean Society 1981 Warne, T.R., Walker, G.L. & Hickok, L.G. (1986). A novel method for surface...
Journal Articles
The American Biology Teacher. 1996; 588478–483 doi: https://doi.org/10.2307/4450215
Published: 01 November 1996
... do the allele combinations identified in #8 map to the variations identified in #5. (This forces students to think about heterozygosity and homozygosity). 13. What are all of the cross possibilities, given the various allele combinations, that can occur? 14. What are the phenotype outcomes of all of...
Journal Articles
The American Biology Teacher. 1996; 582106–110 doi: https://doi.org/10.2307/4450089
Published: 01 February 1996
.... homozygosity versus het- erozygosity) and multiple alleles of a genetic locus are well illustrated by this exercise. We have also used this laboratory exercise to introduce the population genetic concepts of allelic and geno- typic frequency. In our laboratory, af- ter fully discussing the limitations of our...
Journal Articles
The American Biology Teacher. 1988; 504231–234 doi: https://doi.org/10.2307/4448716
Published: 01 April 1988
... reminded that in producing gametes a copy of one member of each gene pair from the adult is transmitted to the gamete. The determination of which allele will be passed to the ga- mete is germane only when there is heterozygosity (with homozygosity, the allele passed to the gamete will be the same as that...
Journal Articles
The American Biology Teacher. 1975; 373144–149 doi: https://doi.org/10.2307/4445127
Published: 01 March 1975
... that there are two kinds of matings which re- sult in normal offspring only. One kind would have parental genotypes AA x AA, or AA x Aa which can- not produce any aa children since their genotypes do not lead to homozygosity for albinism. The other kind of matings which result in normal offspring only...
Journal Articles