The diagram below represents single-celled organism A dividing by mitosis to form cells B and C. B A Cells A, B, and C all produced protein X. What can best be inferred from this observation? A) The gene to produce protein X was passed from cell A to cells B and C. B) Cells A, B, and C ingested food containing the gene to produce protein X. C) The gene for protein X is found in single-celled organisms, only. D) Protein X is found in all organisms.

The diagram below represents single-celled organism A dividing by mitosis to form cells B and C. B A Cells A, B, and C all produced protein X. What can best be inferred from this observation? A) The gene to produce protein X was passed from cell A to cells B and C. B) Cells A, B, and C ingested food containing the gene to produce protein X. C) The gene for protein X is found in single-celled organisms, only. D) Protein X is found in all organisms.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter7: The Cellular Basis Of Inheritance

Section: Chapter Questions

Problem 1ACQ: Figure 7.2 If a mutation occurs so that a fungus is no longer able to produce a minus mating type,...

See similar textbooks

Similar questions

If you expose a culture of human cells (for example,HeLa cells) to 3H-thymidine during S phase, howwould the radioactivity be distributed over a pair ofhomologous chromosomes at metaphase? Would theradioactivity be in (a) one chromatid of one homolog,(b) both chromatids of one homolog, (c) one chromatid each of both homologs, (d) both chromatids ofboth homologs, or (e) some other pattern? Choose thecorrect answer and explain your reasoning.
A single yeast cell placed on a solid agar will dividemitotically to produce a colony of about 107cells. Ahaploid yeast cell that has a mutation in the ade2 genewill produce a red colony; an ade2+ colony will bewhite. Some of the colonies formed from diploidyeast cells with a genotype of ade2+/ ade2− willcontain sectors of red within a white colony.a. How would you explain these sectors?b. Although the white colonies are roughly the samesize, the red sectors within some of the whitecolonies vary markedly in size. Why? Do youexpect the majority of the red sectors to be relativelylarge or relatively small?
According to the endosymbiosis theory, mitochondria and chloroplasts are derived from bacteria that took up residence withineukaryotic cells. At one time, prior to being taken up by eukaryoticcells, these bacteria were free-living organisms. However, we cannot take a mitochondrion or chloroplast out of a living eukaryoticcell and get it to survive and replicate on its own. Discuss why not.
The molecular mechanism of SCE is similar to homologousrecombination between homologs except that the two segmentsof DNA are sister chromatids instead of homologous chromatids.If branch migration occurs during SCE, will a heteroduplex beformed? Explain why or why not. Can gene conversion occurduring sister chromatid exchange?
In the experiment of cell fusion, when tumor cells were fused with normal cells, the initially formed tetraploid cells (or subsequently arising sub-tetraploid cells) were discovered to have lost the ability to form tumors. What is the explanation for this observation?
• Describe one event that occurs in prometaphase of mitosis in eukaryotic cells. • Describe one event that occurs in telophase of mitosis in eukaryotic cells.
Which number accurately represents a chromatid? Number one or number two?
With regard to sister chromatids, which phase of mitosis is theorganization phase, and which is the separation phase?
Consult Figure 1, which shows a human karyotype with chromosomes arranged in order of decreasing size. Would you expect this cell to have any genes characterized as hemizygous? If so, what is an example of a hemizygous gene? On which chromosome would it be located?
When chromatids are separated during anaphase, how do we know that the microtubules that they are connected to are not actually shortening to "pull" the chromatids apart?
What structure is formed by when two sister chromatids areheld together by a centromere?
A bivalent consists of: A Two chromatids and one centromere B Four chromatids and two centromeres C Two chromatids and two centromeres D Four chromatids and four centromeres