More Genotype and Phenotype

Thursday March 7^th

Fill in the blanks with either the term Genotype, Phenotype or alleles (you will use some more than once)

Different forms of a gene are known as Alleles.  These can be either dominant or recessive.  The two Alleles a person has for a specific trait is known as their Genotype.  This determines their Phenotype which is the trait that is expressed.

A plant with purple flowers, when allowed to self-pollinate, produces only purple-flowering offspring.  Which statement BEST describes the genotype of the original plant?

A.  One gene for purple flower color is present on one chromosome.  (this is true - one gene for purple flower color must be present on one chromosome, but the question is asking about the genotype which would involve a discussion about BOTH alleles)

B.  One nucleotide for purple flower color is present on one chromosome. (Recall that a nucleotide is what DNA is made up of.  Each gene contains hundreds or thousands of nucleotides.)

C.  Two alleles for purple flower color are present on homologous chromosomes

D.  Two codons for purple flower color are present on homologous chromosomes (We have not learned yet about codons, but you will find out that codons are a set of three nucleotides that code for an amino acids.   This still does NOT describe a full gene or allele yet.)

KQOD

Using a Microscope, a student observes a small, green organelle in a plant cell.  Which energy transformation most likely occurs first within the observed organelle?

A.  ATP to Light B.  light To chemical C.  Heat to electrical D.  Chemical to chemical

To answer this question, first you had to recall what organelle is green - the chloroplast.   THEN you had to recall what process occurs in the chloroplase - Photosynthesis.  FINALLY you were to recall the energy transformation that occurs during photosynthesis (light to chemical)

We continued with some notes and discussion on the relationship between genotype and phenotype

No Daily Question quiz tomorrow - we will save that for next week (probably Wednesday)