During DNA replication, which of the following segments would be complementary to the original DNA segment of CCTAAT?
GGATTA
100
Which statement is true regarding asexual reproduction as a method of producing offspring?
Produces offspring that are generally identical
100
A human skin cell contains 46 chromosomes. How many chromosomes are present in a human sperm cell?
23
100
In guinea pigs, the allele for rough coat (R) is dominant to the allel for smooth coat (r). A rough coat male and a smooth coat female mate. They produce several litters, of which 50% are smooth coat. What were the genotypes of the parents?
Rr x rr
100
After preforming amniocentesis, which analysis is most often used to determine the chromosomal condition of a developing fetus?
Karyotype
200
Which of the strands below is the complement to the segment GCATCCGA of a DNA molecule?
CGUTUGGCA
200
Which process is responsible for the diversity of plants within a species?
Cross-Pollination
200
Some traits are determined by more than two alleles. If aabbcc is crossed with AABBCC, what would be the genotype of the offspring?
AaBbCc
200
Which genotype is used in a test cross?
Homozygous recessive
200
When viewing a karyotype to detect genetic disorders, which of the following would be a concern?
3 chromosomes in a set
300
What type of RNA is responsible for bringing amino acids to the ribosome for protein synthesis?
tRNA
300
Which of the following demonstrates the MOST SIGNIFICANT difference between asexual and sexual reproduction?
There is genetic variation as a result of sexual reproduction.
300
In a genetics laboratory, two heterozygous tall plants are crossed. If tall is dominant over short, what are the expected phenotypic results?
75% tall, 25% short
300
How would genetically altering crops for pest resistance be economically beneficial?
Crop-eating pest would not ruin crops.
300
A student has cystic fibrosis, a genetic condition caused by the presence of a homozygous recessive gene. What could be her parent's genotypes for the cystic fibrosis trait?
Her father is heterozygous; her mother is homozygous recessive.
400
The messenger RNA will carry the DNA's instructions out of the nucleus to which of the following?
Ribosome
400
What is true about any two normal gametes from a human male parent?
They have the same number of chromosomes.
400
Mr. Jones has blood type A and Mrs. Jones has blood type AB. What is the probability that they will have a child with blood type A if both of Mr. Jones's parents were AB?
50%
400
Great caution must be excercised with recombinant DNA technology. What is the main reason for this concern?
Possible release of gentetically engineered organisms into the environment with unpredictable results
400
The genetic information in the DNA of humans, chimpanzees, and gorillas is more that 98% the same. What is the most likely explanation for this similarity?
They evolved from a common ancestor.
500
To deternime the molecular sequence of a gene for a protein, which molecule should be analyzed?
DNA
500
A cell has undergone a meiotic division cycle. In order for the cell to achieve a diploid state, what must occur?
Fertilization
500
In sickle cell anemia, the heterozygous condition results in resistance to malaria. If two heterozygous parents have a child, what are the chances of that child being resistant to malaria but not having sickle cell anemia?
50%
500
Which of the following DNA technologies offers the best chance of survival for endagered species?
Cloning
500
The Galapagos finches are a group of closely related species of birds. Over time, specialized beaks have evolved for each species in response to mutations and competition for food and living space. This is an example of what?