Last genetics homework. Test will be this Thursday with a review day of this and other homework on Wednesday. This means you have only 3 days to complete this homework. It is due Wednesday the 30th. Let's get a 10 of 10...come sixth period Wednesday for help if you don't understand a question.
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: In a DNA molecule, the letters A,T,C,and G represent
1) bases
2) sugars
3) starches
4) proteins
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: In a DNA molecule, the letters A,T,C,and G represent
1) bases
2) sugars
3) starches
4) proteins
Question #6: A dog breeder can determine that the sudden appearance of hairlessness in one of the puppies is a mutation if the dog
1) is still hairless after 5 years
2) shows no change in the hariless condition
after its diet is changed
3) develops other conspicuous differences from
the parent
4) is bred and the trait is capable of being
inherited
Question #7: A change that alters the base sequence in an organismÃs 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: Which is primarily composed of DNA?
1) genes
2) nerve secretions
3) proteins
4) fluid in vacuoles
Question #10: Mutations can be transmitted to the next generation if they are present in
1) brain cells
2) sex cells
3) body cells
4) muscle cells
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