BIOL 189 Final - Deck 3
Card Set Information
BIOL 189 Final - Deck 3
Deck 3 study cards BIOL 189 CSN
What is a kinetichore?
a protein area located on the centromere where the microtubules will attach
When does DNA replication occur?
during the S subphase of Interphase
In which phase of mitosis are both sister chromatids attached to the microtubules?
In which phase of mitosis are the chromosomes lined up at the metaphase plate?
In which phase of mitosis are the chromosomes pulled towards the opposite poles?
Which phase of mitosis is the shortest?
Which phase of mitosis is the longest?
What occurs during cytokinesis?
division of the cytoplasm
What is a homologous pair?
a single set of chromosomes, one from mom and one from dad, that code for the same traits
What is a replicated homologous pair?
a set of chromosomes with 2 sister chromatids each (total of 4 chromatids)
What are non-sister chromatids?
two chromatids that are part of a replicated homologous pair that are not identical
What are sister chromatids?
two identical replicated chromosomes
In which phase of meiosis I are the homologous chromosomes attached to the microtubules?
In which phase of meiosis I do we see "crossing over?"
In which phase of meiosis I do we see chromosomes line up at the metaphase plate?
In which phase of meiosis I do the homologous chromosomes separate and pull towards opposite poles?
In which phase of meiosis II do chromosomes line up at metaphase plate?
In which phase of meiosis II do we see the separation of sister chromatids?
In which phase of meiosis II do the sister chromatids pull toward opposite poles?
In which phase of meiosis II do the microtubules attach?
How many chromosomes will cells contain following DNA replication?
46, but each chromosome has two sister chromatids
At the end of meiosis I, are the cells that result haploid or diploid, and how many chromosomes do they contain?
haploid, 23 with sister chromatids
At the end of meiosis II are the resulting cells haploid or diploid, and how many chromosomes do they contain?
Which process exhibits a greater number of nuclear divisions, mitosis or meiosis?
meiosis has 2, while mitosis only 1
Which process, mitosis or meiosis, results in fewer daughter cells?
mitosis has 2 daughter cells, while meiosis has 4
Which process, mitosis or meiosis, results in diploid daughter cells?
Which process results in genetically identical daughter cells, mitosis or meiosis?
List the phases of mitosis and meiosis that are similar?
What is a genetic character?
an inheritable feature among individuals
What is a trait?
variations in a genetic character
How is a trait different from a character?
a character is feature such as eye color
a trait is the variation of the feature such as blue, brown, or green
When a phenotype can be determined by more than one allele, it is known as:
What happens when nondisjunction occurs?
an improper separation of chromosomes during meiosis
If nondisjunction occurs during meiosis I, what chromosomal distribution will your gametes have?
If nondisjuntion occurs during meiosis II, what chromosomal distribution will you have?
In which phase of meiosis, I or II, will nondisjunction result in 100% of the gametes being abnormal?
What sugar is part of the DNA backbone?
At which carbon will the phosphate attach to deoxyribose?
How does one sugar-phosphate (A) connect to the next sugar-phosphate (B)?
phosphate of A covalently bonds to the 3' carbon of B
To which carbon do the nucleotides attach?
What enzyme unwinds DNA?
What enzyme adds nucleotides to the new DNA strand?
DNA polymerase III
What enzyme will fill in the blanks after the primers are removed?
DNA polymerase I
Where does translation occur?
in the cytoplasm
How do the nucleotides actually pair up?
purine + pyrimadine
What is the function of primase?
to manufacture the short RNA primer
What role does topoisomerase play in the DNA unwinding process?
it moves ahead of helicase, breaking hydrogen bonds, and releasing tension in the strand
What type of bond connects the complementary bases?
What role do spliceosomes play in RNA processing?
they "cut out" the introns and link together the exons
What is the function of single strand binding protein?
to stabilize the DNA strands after helicase has separated them, and keep them held apart