human+genetics+CC

1. Genotype: specifice alleles for a particular gene written with symbols EE or Ee or ee Alleles: alternate forms of a specific gene at the same position of a gene dominant allele: will be expressed and will mask a recessive gene recessive allele: allele that is only expressed when a gene has two of this type of allele locus:the location of the gene on the chromosome homozygous dominant: 2 dominant alleles that are the same (EE) heterozygous recessive: two recessive alleles (ee) phenotype: physical characteristic heterozygous: one dominant and one recessive (Ee)

2. What is the different in a phenotype and a genotype? Phenotype is the physical characteristic and a genotype is what makes up a phenotype

3. What are three possible genotypes and two possible phenotypes? EE, Ee, ee

4. For each of the following genotypes, give all the possible gametes WW-W WWSs-WW, Ws, Tt- T, t Ttgg- Tg, tg AaBb- AB, ab, Ab, Ba

5. For each of the following, state whether a genotype or a gamete is represented. D- gamete Ll-genotype Pw- gamete LlGg- phenotype

6. what is the geneotype of the individual from the following crosses? ES x es EsSe eS x es esSe

7. Define: Monohybrid: heterozygous with regards to one pair of alleles (Tt x Tt or TT x tt) Punnet square: a chart that lists every possible combination of mother and father sperm and egg combinations

8. A man with a widow's peak has a mother with a straight hairline. Widoes Peak (W) is cominant over straight hairline (w). what is the genotype of the man? Ww

9. Both a man and a woman are heterozygous for freckles. Freckles (F) are dominant over no freckles (f). What is the chance that their child will have freckles? 3/4

10. Both you and your sister or brother have attached earlobes, but your parents have unattached earlobes. Unattached earlobes (E) are dominant over attach earlobes (e). both parents have EeEe