Genetics Question Preview (ID: 22916)
DNA, Traits.
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What shape is DNA?
a) strand
b) single helix
c) long
d) double helix
What does DNA stand for?
a) detoxyribonucleic acid
b) deoxyribonucleic acid
c) deoxyribbonucleic acid
d) deoxygenucleic acid
DNA is made of four bases. What letters represent the bases?
a) TCAX
b) CATU
c) ATCG
d) GACY
How do the DNA bases pair up?
a) CT, AG
b) AT, CG
c) CG, TC
d) TA, CA
A notable feature or quality is a
a) chromosome
b) base
c) allele
d) trait
Two types of traits are
a) inherited and environmental
b) genetical and environmental
c) physique and inherited
d) all of the above
People inherit traits from
a) offspring
b) siblings
c) parents
d) all of the above
Eye color is an example of an
a) genetical trait
b) environmental trait
c) inherited trait
d) none of the above
Where in a cell are chromosomes located?
a) cytoplasm
b) nucleus
c) vacuole
d) cell membrane
Human cells have how many chromosomes in them?
a) 1
b) 23
c) 46
d) impossible to tell
The language you speak is what type of trait?
a) physical
b) environmental
c) inherited
d) chromosomal
Segments of DNA are called
a) traits
b) alleles
c) bases
d) genes
What does heterozygous mean?
a) same
b) different
c) allele
d) DNA
What does phenotype mean?
a) physical feature
b) genetic combination
c) allele pairs
d) homozygous
What tool is used to determine the probability of offspring genotypes and phenotypes?
a) ladder
b) hammer
c) microscope
d) punnett square
What type of letter represents a dominant allele?
a) lower case
b) upper case
c) A, T, C, or G
d) any type of letter
What does homozygous mean?
a) same
b) different
c) allele
d) phenotype
Which of the following is an example of a heterozygous genotype?
a) GG
b) Gg
c) gg
d) GG, gg
Which of the following is an example of a homozygous recessive genotype?
a) GG
b) Gg
c) gg
d) GG, gg
What happens when bases don't match up correctly?
a) alleles
b) genotypes
c) mutations
d) traits
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