WorksheetsGenetic Engineering
Total questions: 16
Worksheet time: 32mins
Which one of the following statements is an accurate description of genes?
DNA is made of carbohydrates that code for genes
Genes are made of DNA and code for proteins.
Genes are made of proteins that code for nitrogen bases.
Proteins are made of genes and code for DNA
As a way to reduce the number of cases of malaria, a human tropical disease, a specific DNA sequence is inserted into the reproductive cells of Anopheles mosquitoes. Which process was most likely used to alter these mosquitoes?
random mutations
cloning studies
natural selection
genetic engineering
Scientists have developed the ability to manufacture hormones, such as human growth hormone, using bacteria. One benefit of this new technology is that
patients can spend more money on their medications
scientists produce drugs that cause more immune reactions
scientists can use only one type of bacteria
bacteria are relatively inexpensive and reproduce quickly
The process shown below is used to
identify the father of a newborn
produce a hormone to regulate blood sugar
produce human hormone
determine if a person has a genetic disease
In the diagram, what was used to "cut" the DNA?
enzymes
genes
receptors
clones
A farmer grows beans that he sells to local markets. Over a period of 40 years, the farmer has identified the plants that produced the most beans and only used those beans to produce new plants. This procedure is part of the process of
selective breeding
replication
cloning
gene splicing
In 1996, scientists cloned the first mammal, a sheep. This technique involved the removal of the nucleus from an egg cell. The nucleus from a cell of another adult sheep was then inserted into this egg cell. Once this cell began to develop into an embryo, it was implanted into a third female sheep that later gave birth to a healthy lamb, Dolly. Which one of the following statements concerning Dolly is correct?
Her offspring would be genetically identical.
Dolly was produced by the recombination of genetic material.
Dolly and her DNA donor are genetically identical.
Two different gametes were manipulated to produce Dolly
Scientists have successfully cloned animals, including large mammals such as sheep. Which one of the following statements provides the most likely reason that a human has not yet been cloned?
Human genes are made of too many different types of simple sugars.
Humans have DNA that is structurally very different from other mammals.
Some people consider human genetic experiments unethical.
Cloning can only be performed on animals that normally reproduce asexually.
Domestic horses have a greater diversity of coat colors than that of wild horses. The process that led to a greater diversity of coat colors in domestic horses is
selective breeding
random mutation
gene alteration
natural selection
Although a liver cell and a muscle cell in a human developed from the same single cell, their appearance and functions are different. This is because the liver cell
expresses different genes than the muscle cell
contains different genes than the muscle cell
lacks the genes found in muscle cells
destroys the muscle cell genes it contains
When comparing a skin cell, eye cell, and leg cell; Every cell in each of these structures contains
proteins that are all identical
organelles for the synthesis of glucose
equal amounts of ATP
identical genetic information
In the summer, the arctic fox appears brown because its cells produce a dark pigment. However, in the winter, the arctic fox appears white because the dark pigment is not produced. The color change is most likely due to the effect of
poor nutrition on cell growth and development
increased pollution on genetic mutations
environmental conditions on gene expression
different genes produced in the different seasons
The technique used to separate the DNA for analysis is
chromatography
recombinant DNA
protein synthesis
electrophoresis
The band of DNA closest to the positive charge
largest fragment of DNA that traveled the fastest
smallest fragment of DNA that traveled the fastest
smallest fragment of DNA that traveled the slowest
largest fragment of DNA that traveled the slowest
Some farmers currently grow genetically engineered crops. An argument against the use of this technology is that
it produces insect-resistant plants
it increases crop production
its long-term effects on humans are still being investigated
it always results in crops that do not taste good
Electrophoresis is a method of
changing the genetic code of an organism
separating colored compounds on a strip of paper
indicating the presence of starch
separating DNA fragments
