however, their resepctive proteomes vary drastically. This observation is best explained by what phenomenon?
a. gene splicing
b. cell division
c. cell differentiation
d. crossing over
e. evolution
crossing over produces
a. mutations
b. sister chromatids
c. homologous chromosomes
d. zygotes
e. recombinant chromosomes
Alternative versions of a gene, found at the same locus on homologous chromosomes are called:
a. sister chromatids
b. alleles
c. phenotypes
d. genotypes
e. varitations
True/False If a fetus or newborn presents with a phenotype suggestive of Down Syndrome, the physician would likely extract and stain interphase cells to visualize the chromatin.
DNA associates tightly with nucleosome/histone proteins because
a. DNA forms covalent bonds with histones
b. Negative charges on DNA phosphates are attracted to positive charges on histones
c. Histones wrap themselves tightly around the DNA double helix
d. Histones amino acidic and attracted to the basic DNA
e. all of the above
Which of the following statements is correct?
a. the cell cycle is a sequence of replication and division
b. the phases of a cell cycle include death of the parent cell
c. interphase consists of G1 and S phases before mitosis begins
d. When the S phase is complete, a cell actually has double the number of chromatids as the number of chromosomes in the G1 phase
e. During G2 phase, the cell grows and copies its chromosomes in preperation for mitosis.
Thank you for all of your help. It is very much appreciated. I am studying for my final.
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