WorksheetsCategory 2 BIOLOGY
Total questions: 59
Worksheet time: 2hrs 38mins
DNA is considered a universal genetic code. Which statements are true of the genetic code? Pick THREE correct sentences.
The order of nucleotide sequences of the genetic code is the same for all living organisms.
The components that make up the genetic code are common among all living organisms.
Proteins are assembled from a four letter codon that specifies what amino acids are needed.
The genetic code uses the four nucleotide bases: adenine, guanine, cytosine, and thymine.
Amino acid sequences on the genetic code can be determined by the arrangement of the codons.
Delray has dimples and his wife does not. Delray has a homozygous dominant genotype for dimples, and his wife has a homozygous recessive genotype for no dimples.
If Delray and his wife decide to have children, then which Punnett square correctly shows the probability of them having a child with dimples?
Sickle-cell anemia is caused by the homozygous recessive genotype. People with sickle-cell anemia have the genotype aa. People without sickle-cell anemia have either the genotype AA or Aa. A woman with the genotype AA has a child with a man with the genotype aa. What is the probability, as a percentage, that their child will have sickle cell anemia? (a)
Which statement best explains the color and texture change of the leaves?
Plants shrink when they do not get sunlight
Plants can grow without sunlight.
Environmental conditions do not alter a plant's characteristics.
Environmental conditions influence the expression of genetic traits
ATG TGA CAG
When going from DNA to mRNA, this process is called?
Transcription
Translation
Replication
When going from mRNA to Amino Acids, this process is called?
Transcription
Translation
Replication
What is the process to code for protein?
DNA --> mRNA --> Protein
mRNA--> DNA--Protein
Protein-->DNA-->mRNA
DNA--> Protein -m-RNA
UUACUACG could be the code for?
DNA
mRNA
Protein
During which of the following stages are the chromosomes aligned at the midpoint of the nuclei?
metaphase
anaphase
telophase
prophase
What is the end product of meiosis?
4 haploid cells.
2 diploid cells.
2 haploid cells.
4 diploid cells.
What process results in the division of 1 cell into 2 identical daughter cells?
Mitosis
Meiosis
G1
Cross-Over
What is the correct order of the stages of Mitosis?
Telophase, Anaphase, Metaphase, Prophase
Prophase, Telophase, Metaphase, Anaphase.
Prophase, Metaphase, Anaphase, Telophase.
Anaphase, Metaphase, Prophase, Telophase.
A mutation is defined as:
A change in the cell's structure
Anything that changes in an embryo
Any change in the physical features of a human
A change in the DNA sequence
Why do insertion and deletion (frameshift) mutations have a greater effect on the organism?
They change all of the codons from the mutation on down the line, which changes the amino acid sequence
They insert things that an organism doesn't need.
They often delete things that organisms need.
Insertion and deletions are not any more harmful than substitution mutations.
Which type of mutation does the model demonstrate?
Deletion
Substitution
Insertion
Translocation
DNA is considered a "universal" molecule, which allows scientists to insert genes from one animal into another, this is made possible because...
DNA, is not universal, it is in fact radically different between species.
all organisms have a nucleus which stores DNA
all organisms have the same sequence of nucleotides of DNA
all organisms have the same components or nucleotides of DNA
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
AGA-TTC-ATA-GCG
Mutant-
AGA-TTC-AAT-AGC-G
A mutation in which only one nucleotide is altered is called a:
Frameshift Mutation
Deletion Mutation
Point Mutation
Insertion Mutation
Genetic mutations can be...
beneficial, harmful, or neutral
beneficial only
harmful only
neutral only
A change in a gene, group of genes or chromosome that results in a change in the proteins
Replication
Mutations
Translation
Transcription
A molecule of DNA is a polymer composed of _____________.
glucose
amino acids
fatty acids
nucleotides
Where in the cell does DNA replication occur?
ribosome
cytoplasm
vacuole
nucleus
The arctic fox inhabits northern area of North America. The same arctic fox is shown in the drawing during different times of the year.
What causes this change in the fur color?
the genes for fur color change as the arctic fox grows older
gene expression for fur color is regulated by magic
the arctic fox has two traits for fur color that are determined at birth
gene expression for fur color is regulated by temperature
The structure X is a ________.
ribosome
nucleus
tRNA
DNA
Involves crossing over
Mitosis
Meiosis
Both
produces identical daughter cells
Mitosis
Meiosis
Both
involves 1 division of nucleus
Mitosis
Meiosis
Both
forms gametes
Mitosis
Meiosis
Both
for growth and repair
Mitosis
Meiosis
Both
involves two divisions of the nucleus
Mitosis
Meiosis
Both
produces haploid cells
Mitosis
Meiosis
Both
begins with diploid parent cell
Mitosis
Meiosis
Both
What is the primary cause of genetic variation during meiosis?
chromosomes lining up
"crossing over" of chromosomes
separation of chromosomes
chromosomes pulling apart
The process of "crossing over" occurs in what phase of meiosis?
anaphase 1
prophase 1
prophase 2
telophase 2
The following pedigree chart shows _______ females and ______ males that DO NOT have the trait.
7, 3
4, 4
3, 2
3, 3
57, 93.5
How many daughters did the mother and father from the first generation have?
2
4
5
6
If a child shows a recessive disorder, and his brother does not, his healthy parents' genotypes are;
Hh and Hh
HH and HH
Hh and HH
hh and hh
Cystic fibrosis is an autosomal recessive disease .
Study the pedigree what are the possible genotypes of #10? (more than one answer)
AA
Aa
aa
XAXa
Generation 2 individuals 5 and 6 are
brother and sister.
cousins.
married.
not related.
Which of the following would result in a frameshift mutation?
Insertions only
Substitution only
Deletion only
Insertions and Deletions
A nucleotide base is inserted or deleted shifting the entire DNA sequence. Entire protein will be changed.
Substitution Mutation
Silent Mutation
Frameshift Mutation
Translocation
Part of a chromosome is reversed.
Inversion Mutation
Deletion Mutation
Translocation
Point Mutation
Part of one chromosome is transported and attached
to a non-homologous chromosome
Inversion Mutation
Translocation Mutation
Duplication Mutation
Point Mutation
