Here we go the second homework for genetics. These too are from the text. Next homework may not be. The first test on this unit will be Wednesday the 16th. This homework and the last will be a large part of the test. So take your time understand why the correct answer is what it is and letís get 90% or better on the test. This homework is due Friday the 11th
Question #1: If in a human the number of chromosomes in a body cell is 46 and that of a fruit fly is 8; in which situation could a mutation be passed on to the offspring?
1) Ultraviolet radiation causes fruit-fly wing cells to undergo uncontrolled division, resulting in cells with 9 chromosomes.
2) A cell in the wall of the human uterus undergoes a change, resulting in cells with 47 chromosomes
3) A primary sex cell in a human forms a sperm that contains 23 chromosomes.
4) A cell in the ovary of the fruit fly undergoes a chromosomal change that results in 5 chromosomes per egg cell
Question#2: Genetic engineering is used in the biotechnology industry to
1) eliminate all infections in livestock
2) synthesize hormones such as insulin and human growth hormone
3) increase the frequency of fertilization
4) eliminate asexual reproduction
Question #3: The insertion of a human DNA fragment into a bacterial cell might make it possible for
1) the bacterial cell to produce a human protein
2) the cloning of the human that donated that DNA fragment
3) humans to become immune to an infection by this type of bacteria
4) the cloning of this type of bacteria
Question #4: Hereditary information for most traits is generally located in
1) genes found on chromosomes
2) chromosomes found on genes
3) the ribosomes of sperm cells
4) the mitochondria n the cytoplasm
Question #5: An analysis of chromosomes in a culture containing mutated cells may show the loss of one or more bases making up the chromosome. This type of chromosomal change is known as
1) an addition
2) an insertion
3) a deletion
4) a substitution
Question #6: What is the technique of genetic engineering in which DNA is transferred from the cells of one organism to the cells of another organism?
1) gene splicing
2) chromatography
3) electrophoresis
4) selective deleting
Question #7: A change that alters the base sequence in an organismís DNA is a
1) mutation
2) replication
3) clone
4) zygote
Question #8: Which portion of DNA would correctly pair with a portion of DNA with the following base sequences: A-T-C-G-T-A
1) G-C-A-T-C-G
2) T-A-G-C-A-T
3) A-T-G-C-T-A
4) C-A-T-G-A-C
Question #9: Some geneticists are suggesting the possibility of transferring some of the genes that influence photosynthesis from an efficient variety of crop plant to a less efficient crop plant. The goal is to produce a new variety with improved productivity. To produce this new variety, the project would most likely involve
1) genetic engineering
2)a gene mutation
3) chromatography
4) vaccinations
Question #10: The technology of genetic engineering has allowed humans to alter the genetic makeup of organisms. Describe one example of such an alteration.
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