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DNA, Genetics And Evolution (7)
Test Description: DNA, Genetics and Evolution -Middle School - Life Science
Instructions: Answer all questions to get your test result.
1) In order to continue life, DNA must
A
breed
B
replicate
C
mate
D
reproduce
2) Different versions or forms of the same genes are called -
A
chromosomes
B
alleles
C
nitrogen bases
D
sex cells
3) A change or mistake in the DNA can cause-
A
a mutation
B
blending
C
meiosis
D
incomplete dominance
4) If all of the offspring have the genotype, Bb in a Punnett Square, what are the genotypes of the parents?
A
bb and bb
B
Bb and bb
C
BB and BB
D
BB and bb
5) Which of the following statements is true?
A
Dogs and humans have the same number of chromosomes.
B
Chromosomes absorb sunlight and help plants go through photosynthesis.
C
Human body cells have 46 chromosomes.
D
Men usually have more chromosomes than women.
6) Chromosomes are composed of coiled together-
A
phosphate
B
cytoplasm
C
chromatin
D
nitrogen
7) If a red snapdragon flower crosses with a white snapdragon flower, the offspring will be pink. What does this represent?
A
Purebred dominance
B
Incomplete dominance
C
One gene influencing many traits
D
A recessive trait
8) The physical appearance of an organism.
A
double helix shape
B
allele pattern
C
phenotype
D
genotype
9) Where is the genetic material of a eukaryotic cell located?
A
In the cell wall
B
In the ribosomes
C
Outside the nuclear membrane
D
In the nucleus
10) If widow's peak (W) is dominant over straight hairline (w), what is the genotype of an individual that is a purebred for widow's peak?
A
ww
B
WW
C
Ww
D
Wx
*select an answer for all questions
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