WorksheetsGenetics Test Review
Total questions: 18
Worksheet time: 9mins
An organism has a recessive trait. What is it's genotype for this trait?
bb
BB
Bb
b
A white cow (WW) breeds with a brown cow (ww). They produce a calf with genotype Ww that is white with brown spots. What type of dominance is this?
Complete dominance
Codominance
Incomplete dominance
multiple alleles
A red flower (RR) crosses with a white flower (rr). Some offspring are pink! What type of dominance is this?
Complete dominance
Codominance
Incomplete dominance
Recessive
Why is the genetic code "universal?"
All organisms have the same DNA
All organisms have genes
Almost all organisms use the same codons for the same amino acids
Almost all organisms use proteins to express their traits
When DNA replicates, DNA polymerase adds complementary bases to form the new strand. Which sequence would be complementary to the original strand of TCAGGTCCGAA?
AGTCCAGGCTT
UGUCCAGGCUU
CGTCCAGTCAAT
AGUCCAGGCUU
If mutations develop in gametes, the mutation will
pass only to cells that develop from it
pass to offspring
delete the DNA in the nucleus and synthesize new DNA
pass to half the cells that develop from it
What process is indicated by letter Y?
DNA replication
Transcription
Translation
Initiation
Which description best explains the process of letter z?
DNA is replicated and forms a complementary strand
DNA is transcribed to RNA by RNA polymerase
tRNA and rRNA translate mRNA to protein
RNA gets balled up to form a protein
If there is a change to the base sequence of DNA, what will most likely happen?
the DNA would self destruct so that the mutation was not passed on
the amino acid sequence may be altered
the organism would die
the chromosome number will be altered
Which of the following is the correct order of the types of mutations occurring in the image (from left to right)?
Insertion, Subsitution, Deletion
Substitution, Deletion, Insertion
Substitution, Insertion, Deletion
Insertion, Deletion, Substitution
Which set of parents below could produce a child with blood type A and genotype AO?
One parent with type O blood and another with heterozygous type B
One parent with heterozygous type A and another with homozygous type B
One parent with heterozygous type A and another with blood type AB
One parent with blood type AB and another with blood type O
The allele for straight tails is dominant over the alleles for curly tails. What is the probability of straight tails in the offspring of parents that are both heterozygous for the trait?
25%
50%
75%
100%
Being albino is a recessive autosomal condition (autosomal means it is normal and not on the sex chromosomes). What is the probability of an albino child if an albino male mates with a female that is heterozygous for the albinism trait?
0%
25%
50%
100%
Two heterozygous plants cross. Using A and a to represent the alleles, which circle graph demonstrates the genotype probability of the offspring?
F
G
H
J
Muscular dystrophy is an x-linked recessive disorder. What would be the genotype of a woman with this disorder?
XmXm
XmX
XMXM
XMXm
Muscular dystrophy is an x-linked recessive disorder. What would be the genotype of a man with this disorder?
XMY
XmXm
XmYm
XmY
Colorblindness is a recessive, X-linked trait. If a man who is not colorblind has a child with a woman who is a carrier, what is the change that they have a boy who is also colorblind.
0%
25%
50%
75%
The DNA sequence is as follows. T A C G C G T A T A C C G A C A T T C. What is the amino acid sequence after the DNA has been transcribed and translated?
METHIONINE-ARGININE-LEUCINE-PROLINE-HISTIDINE
METHIONINE-ISOLEUCINE-TYRPTOPHAN-GLUTAMINE-VALINE
GLUTAMINE - LYSINE-SERINE-ALANINE-GLYCINE
METHIONINE-ARGININE-ISOLEUCINE-TRYPTOPHAN-LEUCINE
