Font size
WorksheetsUnit 6 Test Review
Total questions: 22
Worksheet time: 17mins
The diagram below represents the chromosome pairs present in the body cells of a slug. Slugs reproduce sexually. Exactly how many chromosomes does a slug offspring normally inherit from each parent?
2
4
6
8
A DNA sequence is shown: GCCATTA. What is produced when the sequence is transcribed?
a section of mRNA with the sequence CGGTAAT
a section of DNA with the sequence GCCATTA
a section of mRNA with the sequence CGGUAAU
a section of DNA with the sequence CGGUAAU
What is the first thing that needs to happen inside the nucleus before a protein can be created?
tRNA carries amino acids to the ribosome and attaches it to the mRNA strand.
A ribosome attaches to the mRNA.
DNA unzips between the base pairs.
A new DNA strand is made.
In chickens, the allele for Orange feet is dominant to the allele for yellow feet. What is the probability that the offspring of 2 heterozygous chickens have yellow feet?
0
25
50
100
Which of the following is true about reproduction in viruses?
Viruses form haploid gametes when they reproduce
Viruses reproduce by releasing spores
Viruses require the cellular machinery of host cells to reproduce
Viruses require large colonies to reproduce
A tall, heterozygous daisy is cross-pollinated with another tall, homozygous daisy. What is the probability that the offspring will be a short daisy?
0%
50%
75%
100%
A simple diagram of a DNA molecule is shown below. Identify the components in the red circle.
amino acids
nucleotide base pairs
ribosome binding sites
sugar-phosphate backbone
A particular species of lizard can have red or yellow skin color. The skin color is controlled by a single gene with two alleles, the red allele and the yellow allele. When lizards that are homozygous for red skin color breed with lizards that are homozygous for yellow skin color, 100% of the offspring have red skin color. Based on this information, how do the alleles for lizard skin color interact?
red allele is recessive to the yellow allele
yellow allele is recessive to the red allele
red and yellow alleles are co-dominant
red and yellow alleles are incompletely dominant
The diagram below represents structures and processes involved in protein synthesis in an animal cell. Four parts of the diagram are labeled W, X, Y, and Z. Which part of the diagram represents transcription?
W
X
Y
Z
According to base pairing rules the percentage of _________ is always equal to the percentage of __________.
adenine, guanine
thymine, adenine
adenine, cytosine
guanine, thymine
_______are part of a chromosome that control a trait, such as eye color. ______ are different forms of genes, such as blue or green eyes.
gene, allele
allele, gene
trait, allele
allele, trait
In the Punnett square shown in Figure below, which of the following is true about the offspring resulting from the cross?
about half will be green
all will be green
all will be yellow
all will be striped
True or False? A heterozygous individual that exhibits a trait that is a mixture of both parents is an example of codominance. (e.g. red and yellow flowered plants having orange offspring)
True
False
The presence of two identical alleles at a particular gene location is
homozygous
heterozygous
genotype
phyenotype
The presence of two different alleles at a particular gene location is
homozygous
heterozygous
genotype
phenotype
The ___________ is what is expressed physically.
homozygous
heterozygous
genotype
phenotype
The ___________ is the genetic makeup of the organism
homozygous
heterozygous
genotype
phenotype
A short mRNA sequence is shown in the box below. Determine the DNA sequence from which this mRNA sequence was transcribed. The first three are TAC, complete the remainder. AUG-CAC-GGC
(a)
DNA is ___________ stranded while RNA is ___________stranded.
double, single
single, double
triple, single
single, triple
Using the information in the table below, determine the amino acid sequence that is coded for by the mRNA sequence: AUG -UCU
met-ser
met-tyr
his-pre
ala-arg
What is the start codon? (hint: look at the chart)
AUG
GUA
Met
GGG
Which of the following is a stop codon? (hint: look at the chart)
AUG
UUG
UGA
CGU
