DNA, Genetics And Evolution (7) Question Preview (ID: 17128)


DNA, Genetics And Evolution -Middle School - Life Science. TEACHERS: click here for quick copy question ID numbers.

In order to continue life, DNA must
a) breed
b) replicate
c) mate
d) reproduce

Different versions or forms of the same genes are called -
a) chromosomes
b) nitrogen bases
c) sex cells
d) alleles

A change or mistake in the DNA can cause-
a) meiosis
b) a mutation
c) incomplete dominance
d) blending

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

Which of the following statements is true?
a) Human body cells have 46 chromosomes.
b) Dogs and humans have the same number of chromosomes.
c) Chromosomes absorb sunlight and help plants go through photosynthesis.
d) Men usually have more chromosomes than women.

Chromosomes are composed of coiled together-
a) phosphate
b) chromatin
c) cytoplasm
d) nitrogen

If a red snapdragon flower crosses with a white snapdragon flower, the offspring will be pink. What does this represent?
a) Incomplete dominance
b) Purebred dominance
c) A recessive trait
d) One gene influencing many traits

The physical appearance of an organism.
a) genotype
b) phenotype
c) allele pattern
d) double helix shape

Where is the genetic material of a eukaryotic cell located?
a) In the nucleus
b) In the cell wall
c) Outside the nuclear membrane
d) In the ribosomes

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

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