Final
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If an organism has four pairs of homologous chromosomes and undergoes sexual reproduction, how many different combinations of homologous chromosomes can occur in the gametes after meiosis?
16
The three bases in mRNA that tRNAs recognize during translation are called
Codons
. The process that occurs in both mitosis and meiosis where chromosomes become visible is called
Chromosome Condensation
crossing over occurs during
meiosis between sister chromatids of homologous chromosomes
The hayflick limit refers to
e number of cell divisions a cell can undergo
Which of the following allele combinations for the ABO blood group would demonstrate codominance in an individual?
A,B
During protein synthesis, a(n) _____________ brings an amino acid to the ribosome.
tRNA
A Zygote is formed as a result of
the sperm fertilizing the ovum
Which of the following human genetic diseases most likely results from nondisjunction?
Trisomy 21-Down Syndrome
There are ____________ codons used for the amino acid Leucine during protein synthesis.
Six
if a cells in the G0 stage, this means that the cell
is not undergoing cell division
At the end of both types of cell division
mitosis produces diploid cells and meiosis produces haploid cells
Which of the following pairs are not properly matched? Sickle cell disease: hemoglobin defect c. hemophilia: blood clotting disorder Marfan’s syndrome: collagen defect d. Huntington’s disease: heart cell disorder
Huntingtons disease: heart cell disorder
Apoptosis is the process of
programmed cell death
Two DNA repair genes that are commonly mutated in breast and ovarian cancer are
BRCA1+BRCA2
If an mRNA sequence was AUGCCUGCUCGGAAAUGA the resulting protein synthesized would be
Methionine-Proline-Alanine-Arginine-Lysine.
Huntington’s disease is an autosomal dominant disease that results in the degeneration of nerve cells in the brain. A man who has Huntington’s disease has one normal and one mutated gene (the Huntington disease gene). What is the chance of him having his first child have Huntington’s disease if he has children with a woman who has two normal genes?
1/2
Rh factor incompatibility could result in which of the following? An rh+ mother and an rh- father c. an rh+ mother and an rh+ father An rh- mother and an rh+ father d. An rh- mother and an rh- father
an rh- mother and an rh+ father
sister chromatids have
the same genes and the same alleles
In a pedigree, a consanguineous mating refers to a mating between two individuals who are related c. have the same blood type live in the same area d. already have children
are related
A substance that is hydrophobic
will not readily or easily dissolve or dissociate in water
what does the sodium potassium pump do
• it is a membrane protein • it requires ATP to function • it pumps 3 Na+ ions out of the cell and then pumps 2 k+ ions into the cell
a buffer is a defined substance that
minimizes the change in the pH of a solution when a sting acid or base is added to the solution
the transport of substances in vesicles occurs during
endocytosis and exocytosis during bulk transport