Which of the following are found in an animal cell?
- DNA
- Chromosomes
- Genes
- All of the above
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| Answer: d |
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Nucleotides consist of:
- A 5 carbon sugar, Nitrogen base, and a phosphate group
- A 5 carbon sugar, Nitrogen base, and a double helix
- Adenine, guanine, thymine, and cytosine
- Adenine, 5 carbon sugar, and a phosphate group
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| Answer: a |
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Which of the following represents the correct pairing of the nitrogen bases listed?
Adenine- _____________(1)
Cytosine- _____________(2)
Thymine- _____________(3)
- Cytosine, thymine, adenine
- Thymine, Guanine, Adenine
- Thymine, Guanine, cytosine
- Guanine, Thymine, cytosine
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| Answer: b |
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DNA is copied by separating the strands and using one strand as a template in a process referred to as:
- Duplication
- Replication
- Helixation
- Transcription
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| Answer: b |
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Which of the following is true of RNA compared to DNA?
- RNA has only one strand of nucleotides
- RNA’s 5 carbon sugar is ribose
- RNA’s nitrogen bases are adenine, guanine, cytosine and uracil
- All of the above are true
- None of the above are true
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| Answer: d |
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How many chromosomes does each parent provide to the offspring’s genetic material?
a)1/2
b)1
c)2 pairs
d)17
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| Answer: a |
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How could the structure of a DNA molecule be described?
a)A DNA molecule is twisted double-helix structure with nitrogen bases holding the strands together.
b)The structure of a DNA molecule changes size and shape due to the growth of an organism.
c)Each DNA molecule contains specific protein structures with starch bases adhering to each end.
d)A DNA molecule is a geometric shape as a sphere.
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| Answer: a |
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What do the genes contain?
a)locus
b)probability
c)progeny
d)heredity traits
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| Answer: d |
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Which of the following is the correct set of chromosomes for a chicken?
a)38 chromosomes (19 pairs)
b)78 chromosomes (39 pairs)
c)46 chromosomes (23 pairs)
d)21 chromosomes (42 pairs)
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| Answer: b |
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How is the genetic code of an organism determined?
a)The genetic code of an organism is determined by the number of set chromosome pairs.
b)The sequence of the bases along a DNA molecule determines the genetic code of the organism.
c)The locus of thymine on the DNA base contains the genetic code of the organism.
d)A size difference of chromosomes indicates the code of the offspring.
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| Answer: b |
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If two genes for the same characteristic have the same locus on two chromosomes that are the same size then what is this considered?
a)somatotropin
b)incomplete dominance
c)homologous chromosomes
d)heterozygous chromosomes
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| Answer: c |
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Which of the following is the genetic makeup of an organism?
a)alleles
b)phenotype
c)genetics
d)genotype
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| Answer: d |
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In human eye color, the allele for brown eyes (B) is dominant and the allele for blue eyes (b) is recessive. Which of the following would have blue eyes?
a)BB
b)Bb
c)bb
d)none of the above
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| Answer: c |
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If both parents were heterozygous then what is the probability of the offspring to be a homozygous dominant?
a)25
b)50
c)75
d)100
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| Answer: a |
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Which of the following shows "different alleles”?
a)CC
b)Cc
c)cc
d)all of the above
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| Answer: b |
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What are those characteristics controlled by a single pair of genes and are not affected by the animal’s environment?
a)adequate traits
b)quantitative traits
c)qualitative traits
d)allele traits
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| Answer: c |
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Which of the following are often traits of economic importance like milk produced, eggs laid, and feed efficiency?
a)dominant traits
b)complete dominance
c)qualitative traits
d)quantitative traits
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| Answer: d |
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