DNA
What is DNA?
The blueprint of life
Genotype or phenotype:
green or yellow
phenotype
Complete a punnett square for a cross of a brown eyed parent (BB) with a blue eyed parent (bb). What is the probability that the offspring would have blue eyes?
all offspring would be Bb, and have a zero percent chance of having blue eyes
What is heredity?
the passing down of traits from parents to offspring
Mrs. Kasper's dogs name
Jessie
What are the four bases of a nucleotide?
adenine, thymine, guanine and cytosine
Genotype or phenotype:
VV, Vv or vv
genotype
What is a genotype?
the inherited genes (ex. Tt)
Who was Gregor Mendel?
monk who worked with pea plants and studied how traits were passed down from parent to offspring.
The number of staff members that attended Valleyview as a student.
6
Lyons, King, Kane, S. Plumb, Dawes, & Brigando
What base pairs connect with one another?
Genotype or Phenotype:
A widow's peak
phenotype
What is phenotype?
the inherited physical characteristics (ex. blonde hair)
What is the difference between dominant and recessive traits?
dominant traits are always seen in a phenotype if they are present and recessive traits are only seen if they are the only ones passed down.
How many staff members are named James in the school?
3
Where is DNA located in a eukaryotic cell?
the nucleus
True or False. Different genotypes can code for the same phenotype.
True
What is the difference between homozygous and heterozygous?
homozygous has two of the same alleles (ex. TT or tt) and heterozygous has two different alleles (ex. Tt)
In fruit flies, red eyes are dominant to white eyes. Complete a punnett square for a cross of a red eyed fruit fly (Rr) with a white eyed fruit fly(rr). What is the probability that the offspring would have red eyes?
50% would have red eyes
This teacher is known to hate pasta
Mr. King
What is the purpose of DNA?
to code for proteins
If you know the phenotype of an organism do you automatically know the genotype? Why?
No because there are different genotypes that can code for the same phenotype.
In hamsters, brown hair is dominant to white hair. Complete a punnett square for a heterozygous brown haired hamster and a homozygous white haired hamster. What is the probability that the hamster offspring has white hair?
50 percent chance the hamster will have white hair. Half of the genotypes are Bb and the other half are bb.
Which type of reproduction produces a greater variety within a species?
sexual reproduction
This staff member played on a National Champion softball team.
Mr. Mendes