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7th Grade, DNA Part 2
Test Description: Genetics
Instructions: Answer all questions to get your test result.
1) Which human trait is controlled by a single gene with multiple alleles?
A
height
B
blood type
C
skin color
D
dimples
2) Colorblindness is a sex-linked trait. That means that it will appear...
A
only in animals
B
more in males
C
equally in males and females
D
more in females
3) An organism that has the same genes as the organism that produced it is called a
A
hybrid
B
genome
C
pedigree
D
clone
4) Inbreeding and hybridization are two different types o f
A
genetic engineering
B
selective breeding
C
cloning
D
gene therapy
5) Small rings of DNA called ___ are found in some bacterial cells.
A
plasmas
B
plasmids
C
ellipses
D
helixes
6) By using a stem cutting from an African violet, it is easy to produce a new plant, which is a
A
clone
B
sibling
C
hybrid
D
mutation
7) A female's sex chromosomes are
A
XX
B
pink
C
XY
D
YY
8) The only thing determined by the genes carried on a sex chromosome is a person's sex.
A
false
B
true
9) The body cells of humans contain ___ pairs of chromosomes
A
24
B
12
C
46
D
23
10) In the case of sex-linked traits, ___ are carriers.
A
males
B
both females and males
C
females
D
babies only
11) Which sex chromosome carries less information?
A
X
B
they don't carry any information
C
Y
D
they both have the same amount of information
12) Blood type A is
A
dominant while B is recessive
B
codominant with B
C
recessive with B while O is dominant
D
recessive while B is dominant
13) A trait like dimples, where you have them or you don't, is an example of
A
single gene, two alleles
B
none of the above
C
single gene, multiple alleles
D
one trait, many genes
14) We can insert DNA into the plasmid of a bacteria to produce
A
hemoglobin
B
aspirin
C
iron
D
insulin
15) Breeding two dogs that are good retrievers in the hopes that their babies will also be good retrievers is an example of
A
cloning
B
selective breeding
C
gene therapy
D
genetic engineering
16) Crossing two genetically different individuals to get the best traits from both parents is called
A
inbreeding
B
gene therapy
C
hybridization
D
cloning
17) Cloning is an accepted practice in the LCMS.
A
true
B
false
18) Which is NOT a concern about genetic engineering?
A
genetic engineering can cause health problems in humans
B
genetically engineered organisms can harm the environment
C
genetic engineering would make smarter people
D
genetic engineering can cause problems down the road
19) Taking a cutting from an African violet is an example of
A
selective breeding
B
hybridization
C
inbreeding
D
cloning
20) Inserting copies of a gene directly into a person's cells is called
A
selective breeding
B
dna extraction
C
hybridization
D
gene therapy
*select an answer for all questions
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