The inheritance of a trait in humans is BEST described as being determined by
What is one or more pairs of alleles
100
If a human baby BOY inherits a recessive allele from his mother, in which circumstance would he most likely show the trait coded for by the recessive allele?
What is the baby inherits the dominant allele from his father.
100
Where tRNA and mRNA come together and proteins are made
What are ribosomes
100
Why does natural selection act on phenotype instead of genotype?
Phenotype directly influences the interaction of an organism with its environment
100
Fusion of normal gametes (which gametes?) will produce a human male
What is X (egg) Y (sperm)
200
This process is necessary for the inherited traits of an organism to be passed along by sexual reproduction.
What is meiosis
200
All cells have the exact same DNA, but blood cells, nerve cells, and bone cells are different.
What is different patterns of gene expression
200
What is the order of events that leads to genetic expression
What is
DNA - RNA - amino acid - protein - genetic expression
200
Mutations within a DNA sequence are...
natural processes that produce genetic diversity.
200
Each half of the original DNA molecule is joined with a new complementary DNA strand
What is semi-conservative replication of DNA
300
In pea plants, the allele for round seeds (R) is dominate to the allele for oval seeds (r). In a cross between the two plants above, what percentage (%) of the offspring will have round seeds?
What is 75%
300
If you have a set of genes that code for NORMAL wing structure and compared it to a set of genes that code for ABNORMAL wing structure and see that the abnormal one is shorter than the normal one. This may be a result of what?
What is deletion
300
How do you read a codon chart
What is left side (1st base), then top (2nd base), then right side (3rd base)
300
An organism with favorable genetic variations will tend to survive and breed successfully. This is an example of what?
What is Natural selection
300
If a corn plant has a genotype of Ttyy, what are the possible genetic combinations that could be present in a single grain of pollen from this plant?
What is Ty, ty
400
Heterozygous pink flowers are an example of incomplete dominance in plants. These flowers may produced as a result of what?
What is the expression of a recessive gene
400
Both of these contain the nitrogen bases cytosine and guanine
What is DNA and RNA
400
A single species of squirrel evolved over time into two species, each on the opposite sides of the Grand Canyon. This change was most likely due to...
What is the isolation of the two groups.
400
A small portion of a population that is geographically isolated from the rest of the population runs the risk of decreased what?
What is genetic variation
400
A particular allele in mice is lethal in homozygotes. Heterozygotes, however, develop normally. Why does this allele remain in the population?
The recessive allele is masked in the heterozygotes
500
In fruit flies, the gene for red eyes (R) is dominate and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of 2 red-eyes heterozygous flies (Rr)
What is RR, Rr, rr
500
The base sequence of DNA is ACAGTGC What would the base sequence be coded on mRNA?
What is UGUCACG
500
One human disease is caused by a change in one codon in a gene from GAA to UGA. This disease is the result of..
What is a mutation
500
Earth has underdone some catastrophic changes from time to time.
What might explain why life on Earth continued following these catastrophes?
A wide diversity of species existed.
500
Genetic engineering has produced goats whose milk contains proteins that can be used as medicines. This effect was produced by..
inserting foreign genes into fertilized goat eggs.