Are
What type of cells does meiosis produce?
- haploids or
- gametes (sperm & eggs)
The genetic characteristic
Genotype
Different forms of genes are called...
Alleles
organisms that have two different alleles for the same gene
heterozygous
The physical characteristics
What shape does DNA take?
helix or spiral
A=T
G=C
A process in which a number of chromosomes per cell cut in half through the separation of homologous chromosomes in a diploid cell
Meiosis
probable outcome of a cross
Organisms that have two identical alleles for a particular trait are said to be
Homozygous
Give me two ways meiosis and mitosis are different:
- sister chromatids are not identical
-two cycles of separation
-gives 4 haploid cells
Give me two ways meiosis and mitosis are similar
- separation of sister chromatids
- movements of chromosomes
Oswald Avery and his team ran experiments to identify the molecule that caused the transformation that Griffith identified. The results of the experiments showed that transformation could be caused by which type of molecule?
DNA
- storing information
- copying information
- gene expression
Unlike mitosis, meiosis in male mammals results in the formation of
four haploid gametes
What kinds of information does DNA store?
genetic information that codes for the traits of an individual
transformation
Bacteriaphages are . . .
viruses that infect bacteria
Which researchers used radioactive markers in experiments to show that DNA was the genetic material in cells?
Hershey & Chase
List the chemical components of DNA (There are three)
1. deoxyribose sugar
2. phosphate groups
3. four different nitrogenous bases
A DNA strand has the following sequence: ACCGAGGTT. What is the sequence for the complementary strand?
T-G-G-C-T-C-C-A-A
How does DNA replication compare between prokaryotes and eukaryotes?
Prokaryotes - single replication fork (shorter time)
Eukaryotes - many replication points (long time)
How did Mendel keep his pea plants from self-pollinating?
cutting away the pollen-bearing male parts of the flower
According to Chargaff’s experiments, if 20% of a DNA sample is made up of thymine, what percentage of the sample is made up of cytosine?
30%
In guinea pigs, the allele for black fur (B) is dominant over the allele for white fur (b). A cross of two black Guinea pigs produces three offspring, all of which have black fur. What are the genotypes of the parents most likely to be?
At least one parent was homozygous dominant (BB), but the other parent could be heterozygous (Bb).