Human Traits The Physical Aspect. Santiago Callejas Cherish Centeno Romina Chanduvi Aileen Perez. Abstract.
Since, dominant traits have “supremacy” over recessive traits, we have created and conducted surveys that establishes whether dominant traits are more common than recessive traits in the Miami-Dade College Wolfson Campus student population.
If dominant traits prevail over recessive traits, then dominant traits should be more “commonly” found in Miami Dade’s College student population.
The genetically determined characteristic or condition of an individual.
These characteristics are controlled by one or more genes.
Most genes have two or more variations, called alleles. For instance, the gene for hairline shape has two alleles – widow’s peak or straight. An individual may inherit two identical or two different alleles.
The eye color gene, also has more than one variation.
Straight Hairline Widow’s Peak
Mendel studied traits & how they are passed on to offspring
Gregor Mendel (1822-1884)
is expressed only when two copies of the gene are present
2 Matching Allele
-In homozygous individuals, The allele that is expressed is either the “recessive” allele or the “dominant” allele.
is expressed in a person who has only one copy of that gene
2 Different Allele
-In heterozygous individuals, the allele that is expressed is the “dominant” allele.
In the case of genes located on the X chromosome, females would have the usual 2 alleles for each gene but males only have 1 X chromosome and thus 1 allele (the Y chromosome contains only a small number of genes related to gender)
Chromosomes of offspring don’t have a half that’s clearly from dad and a half that's from mom. During duplication there is "crossing over" of bits of each half.
Miami- Dade Wolfson Campus
Determining Factors: Race, gender and writing hand
-Window’s peak hairline
-Free ear lobe
Results show that our hypothesis was indeed correct. They are more people within the population who express dominant traits rather than recessive traits. However, our studies also revealed that there are many among the population that display recessive traits.
1. Name a leading recessive trait found in the Miami-Dade student population.
2. Is tongue rolling a dominant or recessive trait?
3. Who is going to get an A for the presentation