WorksheetsSB2bc & SB3c Quiz Review
Total questions: 15
Worksheet time: 8mins
The graphic shows an organism reproducing. Which best describes an advantage of this type of reproduction?
It allows for fast reproduction.
It introduces genetic variation.
It does not require any energy.
It prevents mutations from occurring.
Polymerase chain reaction (PCR) analysis is a technique used to replicate DNA. The process of PCR can create millions of copies of a small sample of DNA. What can scientists determine by using PCR analysis?
whether an individual recently produced strands of messenger RNA
future factors that may cause mutations
the amount of time that an individual was exposed to a toxic substance
the code for a unique trait of an individual
The diagram shows chromosomal crossover. How does this crossing over of chromosomes affect the traits of offspring?
It causes more similarity in the traits of offspring.
It causes more variation in the traits of offspring.
It causes more mutations in the traits of offspring.
It causes more dominance in the traits of offspring.
Scientists are investigating an unknown species of plant by analyzing its DNA with gel electrophoresis. They compare the unknown plant to four known species of plants (W, X, Y, and Z), as shown. Which question are the scientists MOST LIKELY trying to answer?
In which geographic location is the unknown species located?
What method of reproduction does the unknown species use?
Which known species is the unknown species most closely related to?
What is the average height of the unknown species?
Which BEST describes a benefit of sexual reproduction?
It creates many offspring in a short amount of time.
It prevents mutations from being passed on to offspring.
It creates diversity in offspring that enhances the probability of survival.
It ensures the offspring will receive only the best traits from each of the parents.
Tulips are flowers that can reproduce asexually from bulbs. What is a benefit of tulip plants using asexual reproduction?
The tulips can populate a large area in a short amount of time.
The tulips can produce a wide variety of traits in their offspring.
The tulips will not pass on genetic mutations to future generations.
The tulips have a better chance of surviving an environmental change.
Allelochemicals are biochemicals produced by plants which can affect other organisms. Some allelochemicals act as natural herbicides and can alter growth and enzyme action, injure the outer covering of a seed, or stimulate seed growth at inappropriate times of the year. How could people create biotechnology that uses these allelochemicals to improve the yield of agricultural crops?
The biochemicals could be used to naturally fertilize plants.
The biochemicals could be used to biologically control weeds.
The biochemicals could be used to encourage cross-pollination.
The biochemicals could be used to stimulate crop growth year round.
The diagram shows three types of mutations. Which table correctly identifies each type of mutation in the diagram?
W - deletion, X - insertion, Y - substitution
W - substitution, X - deletion, Y - insertion
W - insertion, X - substitution, Y - deletion
W - deletion, X - substitution, Y - insertion
What are three sources of genetic variation?
genotypes, phenotypes, and polygenic traits
sexual reproduction, crossing over, and mutations
acquired traits, sexual reproduction, and mutations
single-gene traits, polygenic traits, and adaptive traits
What prevents scientists from cloning humans despite the fact that other mammals, such as sheep, have been cloned?
The technology to clone humans has not been explored.
Cloning humans would take too much time to reproduce.
There are many ethical problems involved in cloning humans.
Human reproduction is very different from that of other mammals.
The New Mexico whiptail lizards are all female. The female lizards' eggs can develop into embryos without fertilization, eliminating the need for male New Mexico whiptail lizards. Unlike the New Mexico whiptail, the Canyon Spotted Whiptail reproduces through sexual reproduction. The female Canyon Spotted Whiptail lizards will lay one to four eggs fertilized by the male. Two scientists are debating the reproductive advantages of both lizard species. The first scientist says the New Mexico whiptail lizard has more reproductive advantages. Which THREE advantages of asexual reproduction support the first scientist's claim?
A mate is not required.
Less genetic variation is present.
Less energy is required in the process.
Favorable traits will be passed on to offspring.
The organisms can easily adapt to changing conditions.
A portion of sequences for two types of hemoglobin are shown in the diagram. Sickle-cell anemia is caused by a mutation of one nucleotide in a gene. Using the diagram, which type of mutation is responsible for sickle-cell anemia?
a frameshift mutation
an insertion mutation
an inversion mutation
a substitution mutation
An organism is exposed to a mutagen that causes a mutation in the kidney cells. Which best describes if the offspring of the organism will inherit the mutation, and why?
The offspring will inherit the mutation because the abnormal protein that is synthesized will be copied into the sex cells.
The offspring will not inherit the mutation because enzymes will fix the mutation before it can be passed on.
The offspring will inherit the mutation because the arrangement of the DNA is permanently altered.
The offspring will not inherit the mutation because the mutation is not in a sex cell.
Which of the following statements is true with regard to recombinant DNA?
Recombinant DNA is produced by pasting together DNA from two sources.
Recombinant DNA is larger than a typical chromosome.
Recombinant DNA can be found in fungus cells.
Recombinant DNA is used to produce hundreds of other DNA products.
The diagram shows nondisjunction that can occur during anaphase. Which BEST describes a result of nondisjunction?
gametes that will continue to divide
gametes with identical genetic information
gametes with unique combinations of genes
gametes with an improper number of chromosomes
