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Bio exam 3
Terms in this set (39)
What term describes a trait that is controlled by many genes?
What building blocks form a DNA molecule?
Which nitrogenous base pairs with adenine in a DNA molecule?
Which molecule remains in the nucleus during protein synthesis?
Which complementary base pairings occur between DNA and RNA?
G to C and A to U
How does RNA differ from DNA?
RNA is single-stranded
When genes are copied (in transcription), what form does the resulting copy take?
Strand of mRNA
Which molecules serves as the templates during translation?
Which structure always contains three nucleotides?
If a DNA sequence of a gene reads, in part, TAACAGGTCA, what is the sequence of the complementary strand of DNA?
What sequence of mRNA is made from the gene TTACAGGTCC?
What are the undifferentiated cells that can be used in therapeutic cloning?
What process is used to clone animals like the famous sheep "Dolly"?
What ability is found in stem cells that are totipotent?
Totipotent cells can develop into any cell type
How do scientists use the term theory?
as a set of findings that are supported by repeated testing
Which of the following describes the ability of a single gene to have multiple phenotypic effects?
Which example describes biological evolution?
Over time, a caterpillar species becomes as green as the leaves it eats
In the figure to the right, what do the branching points of the tree represents?
The origin of a new species from an ancestral form
A 12 year-old girl visits a doctor because her body appears to be undergoing dramatic changes. She seems to be developing a penis and scrotum, she is growing a surprising amount of facial hair, and her voice is dropping. The doctors do some testing and find that she has a Y chromosome and that her body is deficient in important enzyme. This patient most likely has which of the following conditions:
Congential Adrenal Hyperplasia
Which of the following genotypes indicates a human female?
d) Both b and c*
e) Both a and c
f) all of the above
CC, the cloned cat, was created according to the following steps: a cell was taken from 'Cat A' from which the nucleus was kept. An egg was taken from 'Cat B', of which the cytoplasm was kept. The nucleus and the egg were joined in a test tube and then implanted into the uterus of 'Cat C' who eventually gave birth to CC. Of which of these cats is CC's the clone?
a) Cat A*
b) Cat B
c) Cat C
d) all of the above
A mating between a true-breeding red flower and a true breeding white flower results in offspring that are all pink. Which of the following best describes this scenario?
In a human condition, girls are partially 'masculinized'. In studies of these girls, researchers have found that they exhibit play behavior more similar to boys(e.g. more rough and tumble play, more boy-like drawings). Which condition is this?
Congenital Adrenal Hyperplasia
What amino acid sequence will be generated, based on the following mRNA codon sequence?
What gene can trigger the development of male reproductive anatomy in an XX human?
What gene can trigger the development of male reproductive anatomy in an XX human...
Explain why this phenomenon is possible.
Unequal crossing over during meiosis
What are two non- genetic mechanisms for sex determination observed in non-human animals?
1: incubation temperature in some reptiles
2: Social environment in some fishes
Is this individual genetically male or female?
(question 29-31 on test...use the diagram)
How do you know the sex of this individual? (question 29-31 on test...use the diagram)
Presence of the Y chromosome
What condition does this individual have? (question 29-31 on test...use the diagram)
Each arrow represents a process of change that occurs in the cell. For each arrow, identify the process.
1st arrow (DNA to RNA): Transcription
2nd arrow ( RNA to Protein): Translatio
For each arrow, describe the location inside of a eukaryotic cell.
First arrow (DNA to RNA): inside the nucleus
Second arrow (RNA to Protein): in the cytoplasm/at a ribosome
A possible sequence of nucleotides in the template strand of DNA that would code for the polypeptide sequence phe-leu-ile-val would be?
(question 24 on test... use the diagram)
Combination of alleles an individual has
The same gene can have many versions:
Minor changes in the sequence of DNA
slightly different protein
Store information to make a protein( proteins give traits we see)
Genotypes are _____
Phenotypes are determined by your genes
Phenotypes are determined by experience, learning, exposure
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