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Ch 7, 6th Grade
Test Description: Genetics
Instructions: Answer all questions to get your test result.
1) A section of DNA that has genetic info for one trait
A
DNA
B
gene
C
chromosone
D
allele
2) An adaptation that helps a species blend in with its natural surroundings
A
inheritance
B
mimicry
C
camouflage
D
alleles
3) How a trait appears or is expressed
A
genotype
B
chromotype
C
appearotype
D
phenotype
4) A permanent change in the sequence of DNA in a gene
A
mutation
B
adaptation
C
variation
D
differentiation
5) An adaptation in which one species looks like another species
A
mimicry
B
prints
C
adaptation
D
camouflage
6) Where is DNA located?
A
only in reproductive cells
B
in plants and fish only
C
in chromosomes
D
in genes
7) Why do organisms have pairs of chromosomes?
A
organisms only have 1 chromosome
B
in case 1 is damaged, the other will do the duties of both
C
2 is better than 1
D
the egg and sperm each give a half set of chromosomes
8) Humans have ___ chromosomes.
A
46
B
23
C
96
D
12
9) A gene for a single trait is called a(n)
A
chromosomes
B
phenotype
C
allele
D
genotype
10) The process that creates sperm or egg cells
A
photosynthesis
B
mitosis
C
cellular respiration
D
meiosis
11) When a sperm and egg join, ___ occurs.
A
pollination
B
asexual reproduction
C
fertilization
D
none of the above
12) T/F: Most mutations occur randomly.
A
false
B
true
13) What can happen because of mutation?
A
nothing
B
all of the above
C
the organism can be harmed
D
the organism can be helped
14) Variations occur through
A
skills picked up in an organism's lifetime
B
asexual reproduction
C
none of the above
D
mutatios
15) In selective breeding, what chooses which traits are passed down?
A
bacteria
B
the parents
C
Mother Nature
D
humans
16) The ability of an organism to keep its internal conditions within certain limits
A
metabolism
B
homeostasis
C
photosynthesis
D
mutualism
17) A biochemical change that enables a species to increase survival or maintain homeostasis
A
behavioral adaptation
B
structural adaptation
C
functional adaptation
D
none of the above
18) T/F: A parrot picking up a ball and putting it in a basketball net is an inherited trait
A
false
B
true
19) The offspring created through asexual reproduction is
A
nothing like the parent
B
similar to the parent
C
genetically identical to the parent
20) An organism's complete set of genes is its
A
phenotype
B
chromosomes
C
allele
D
genotype
*select an answer for all questions
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