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WorksheetsLab Practical Test 2
Total questions: 20
Worksheet time: 23mins
Identify the phase shown here.
Metaphase
Telophase
Anaphase
Prophase
Identify the stage shown here.
Telophase
Anaphase
Metaphase
Prophase
What stage does crossing over happens?
Prophase of mitosis
Prophase of meiosis I
Prophase of Meiosis II
Happens during prophase of both mitosis and meiosis
Free earlobe(F) is dominant over attached. John and his wife have free earlobes. Their daughter has an attached earlobe. Which of the following is the possible genotypes of the couple?
FF X FF
FF X ff
Ff X Ff
FF X Ff
Curly is dominant over straight hair and heterozygous produce wavy. A man with a curly hair marries a woman with a straight hair. What is the probability that they will have a child with wavy hair?
0%
25%
50%
100%
A person with ABHh has a blood type AB while a person with ABhh has a blood type O. What does this demonstrate?
Mutation
Epistasis
Crossing over
None of the choices
Cross between two pea plants heterozygous for round seeds. Out of 900 seeds, how many will have rr (wrinkled)?
400
200
300
450
What is the degree of freedom when you cross Tt and tt?
1
2
3
4
A cross between Tt and tt has 100 seeds. 65 germinated to be tall and 35 germinated to be short. What is the value of the chi-squared? SAVE your work to answer a question on whether to reject or accept the null hypothesis.
1
4.5
9
none of the choices is correct
Refer to your answer that says SAVE .Will you reject or accept the null hypothesis? Why?
Accept because the chi squared value is lower than the critical value.
Reject because the chi squared value is higher than the critical value.
Accept because the chi squared value is higher than the critical value.
Reject because the chi squared value is lower than the critical value.
Substance in DNA extraction that emulsifies plasma and nuclear membranes.
Salt
Soap
Ethanol
Enzyme
Substance that makes the DNA separate from other components like carbohydrates, lipids and proteins that remain in the solution during DNA extraction.
Salt
Cold ethanol
Soap
Filter
Which one is the last step in purifying DNA?
Collect the cheek cells
Burst cells open
Separate DNA from proteins and debris.
Isolate concentrated DNA
Reasons for isolating human DNA.
Genetic testing
Body identification
Analysis of forensic evidence
All of the choices
Using a micropippette, what does it do when you press the plunger first stop position? 2nd stop position?
Fills the tip, ejects the solution
nothing, fills the tip
Fills the tip, nothing
Fills or ejects, fills or ejects
What reading is shown on P-200 micropippete?
0.5 microlitter
5 microliters
50 microliters
500 microliters
Charge of your power that is connected close to the wells where the sample is placed.
Negative
Positive
Neutral
Either positive or negative
Electrophoresis separates DNA based on
kinds of molecules
sequence of nucleotides
lengths
DNA polymerase
What is the importance of polymerase chain reaction (PCR)?
To make more copies of DNA
To synthesize DNA polymerase
To transcribe DNA to mRNA
To translate mRNA
Organism that produces the most often used DNA polymerase.
Fungi from Yellow Stone (Penicillium notatum)
Protist called Amaoeba proteus
Bacteria from Yellow Stone (Thermus aquaticus)
Euglena
