BIO 340 Exam 1 Questions And Answers
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Mitosis - answer-Creates two daughter cells IDENTICAL to parent.
-Happens in Somatic cells
-Parent cells is diploid (2n). So if there are 3 pairs of chromosomes 2n=6.
Human karyotpye is 2n=46
What is function of mitosis and meiosis? - answerThey ...
iv. All of the above - answer✔iv. All of the above
Where are genes located? - answer✔-On chromosomes
-Each chromosome has a distinct set of genes in specific locations
What is the number of chromatids in an organism with 4 chromosomes in G1 and G2? - answer✔-G1: 4
chromatids
-G2: 8 chromatids
What are characteristics of eukaryotic chromosomes? - answer✔-DNA carries the genes
-The molecule is linear
-Most of the time it is present in the cell in its uncoiled form associated with
proteins and RNA (chromatin)
-Its fragile and diffuse, which is a problem for cell division
--The solution for this is to package by multiple condensation
How many centrioles do centrosomes in animal cells have? - answer✔2
Microtubules - answer✔-form around the centrosomes
-build the spindle
apparatus
-some attach to the kinetochores which are on the
centromeres of chromosomes during cell division.
-They help pull
the chromosomes apart during anaphase
Chromatin - answer✔-the DNA that makes up a chromosome
-Chromosomes are the pieces of DNA made up of chromatin
Chromatids - answer✔the identical pieces of DNA held together by
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