Biology 1201 Exam 4 Cell Cycle
A
Replicated chromosomes can be found during which of the following stages of the cell cycle? A. metaphase B. telophase C. G1 D. Cytokinesis
32
The diploid number of chromosomes for a horse is 64. What is the haploid number?
The two chromatids were formed by replication of the DNA within a single chromatid
This chromosome has two chromatids, joined at the centromere. Which process led to the formation of the two chromatids?
Aneuploid (an abnormal number of chromosomes)
A human with 47 chromosomes would be considered?
18
A cell containing 36 chromosomes during Interphase would produce, via meiosis, daughter cells containing ____ chromosomes
the same, the same
A cell in Anaphase I of meiosis would contain _______ number of chromosomes and ________ amount of DNA compared to the same cell when it was in G2.
Half as much
A cell in Anaphase II will have how much DNA compared to when it was in Prophase I?
Twice as many, twice as much
A cell in Anaphase of mitosis will have how many chromosomes and how much DNA compared to that same cell when it was in G1 of interphase
3 chromosomes, no pairs
A cell in G1 of the cell cycle contains a total of 6 chromosomes in 3 homologous pairs. It undergoes meiosis, during metaphase II each cell would contain?
Equal amount in both, just more DNA in G2
A cell in G2 of interphase will have how many chromosomes compared to G1 of interphase?
Twice, because it has been replicated
A cell in G2 of interphase will have how much DNA compared to that same cell when it was in G1 of interphase?
Same # and same amount
A cell in Metaphase of mitosis will have how many chromosomes and how much DNA compared to that same cell when it was in G2 of interphase?
Twice as many, the chromosomes become unreplicated in Anaphase
A cell in anaphase of mitosis will have how many chromosomes compared to the same cell when it was in G1 of interphase?
Equal
A cell in anaphase of mitosis will have how much DNA compared to that same cell when it was in G1 of interphase?
No
After crossing-over the sister chromatids are identical?
C
All of the following occur during mitotic prophase EXCEPT A. the mitotic spindle is organized B. the nuclear envelope disappears C. chromosomes are duplicated D. The nucleolus disintegrates E. The centrioles move apart
Replicated, homologous
During anaphase I of meiosis a cell would contain _________ (replicated or unreplicated) chromosomes and (homologous or no homologous) pairs
unreplicated, homologous
During anaphase II of meiosis a cell would contain ________ (unreplicated or replicated) chromosomes and _____ (homologous or no homologous) pairs
two four
During prophase a homologous pair of chromosomes consists of ___ chromosomes and ___ chromatids
G1
Human somatic (body) cells contain between 7 and 14 picograms of DNA. A cell containing 7 picrograms could be in which stages of the cell cycle?
S
Human somatic cells contain between 7 and 14 picrograms of DNA. A cell containing 9.5 picograms would most likely be in which stage of the cell cycle?
24
If a cell contained 12 chromosomes, during interphase, how many chromosomes would be present during anaphase?
34, there is one DNA molecule per chromosome
If an organism normally has 34 chromosomes, howm nay molecules of DNA should there be in G1 phase of the cell cycle?
Genetically indentical
In replicated chromosomes the sister chromatids are?
two haploid 4 haploid
Meiosis I produces ___ cells which are ____. Meiosis II produces ___ cells which are ____.
Barring mutation, the two sister chromatids must be identical
Two sister chromatids are joined at the centromere prior to meiosis. What statement would be correct?
End of prophase I, during prophase I
When does crossing over and synapsis occur?
Meiosis
Which process is responsible for the independent assortment of alleles?
Because that avoids a big tangled mess
Why do the chromosomes condense (supercoil) prior to mitosis and meiosis?
Sexual reproduction
Why only half the # of chromosomes in meiosis?