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WorksheetsUnit 3 Test Review
Total questions: 12
Worksheet time: 9mins
If tail length in cats is an incompletely dominant trait, what would the resulting offspring of a cross between a long-tailed cat (HH) and a short-tailed cat (hh) be?
HH (long-tailed)
hh (short-tailed)
Hh (medium-tailed)
A horse's gametes contain 32 chromosomes. What will the diploid number of chromosomes be in the horse's body (somatic) cells?
32
64
16
30
Black rabbits are dominant over brown rabbits. A heterozyous male is crossed with a brown female. What percent of the offspring would you expect to be brown?
100%
75%
50%
0%
The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?
DNA opens up and RNA copies it.
DNA opens up and completely unwinds to make two new molecules.
RNA opens up the DNA and uses each strand as a template for a new strand.
Given the sequence of DNA nucleotide bases TAGTAGTAG, give the complementary strand of mRNA produced during transcription.
AAGGUAGUA
AAUCGGAAC
AUCAUCAUC
GAGGAGGAG
Which of these is a segment of DNA that contains the information necessary to produce a protein?
a base
a gene
a codon
a chromosome
For plants and other organisms to develop differences among their respective species the alleles of their genes must contain variations. What is the original source of these variations?
Mutation
Crossing over/ genetic recombination
Random fertilization
Independent assortment
Which is an ADVANTAGE of sexual reproduction?
Two parents are required.
Only one parent is required.
It leads to genetically diverse offspring.
Among a species of butterflies, the color blue (B) is a dominant trait. Yellow color (b) is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like?
They will all be blue.
They will all be yellow.
Half will be blue and half will be yellow.
About 75% will be blue and 25% will be yellow.
A man with type A blood marries a woman with type B. Their offspring all have type AB blood. The pattern of inheritance is called
codominance.
sex-linkage.
crossing over.
incomplete dominance.
Based on the pedigree chart, what should you assume about the parental generation?
The father was a carrier for a sex-linked disease.
The mother was a carrier for a sex-linked disease.
You cannot make any assumptions based on the pedigree chart.
Both the father and mother were carriers of a sex-linked disease.
During the process of _______________, the genetic message from DNA is transformed into mRNA.
transcription
translation
translocation
transplantation
