. In Figure 12.14, why do the nuclei resulting fromexperiment 2 contain different amounts of DNA?

So if you see growth on a histidine-deficient medium in a yeast 1 hybrid and you assume that it is a false positive. What could have caused this? The yeast cells are normal and this wasn't caused by other molecules.

3. The CAS9 enzyme (shown in red in the image below) is able to target and cut out specific DNA sequences. a) What are the molecular building blocks of CAS9? b) Explain in a few sentences how these building blocks come together to make something as complex and functional as CAS9. What types of interactions hold CAS9 together? c) What are the molecular building blocks of DNA? d) What type of linkage is broken when CAS9 cuts out a piece of DNA? e) How many base pairs would need to be cut out of a DNA sequence that codes for a protein consisting of 317 amino acids?

What type of chromosomal rearrangement occurs If a single chromosome suffers two double-strand breaks followed by DNA repair that fuses the remaining broken ends (nonhomologous end-joining) if the intervening fragment rotates by 180°?

An Hfr strain that is leuA+ and thiL+ was mixed with a strain thatis leuA− and thiL−. In the data points shown in the following graph,the conjugation was interrupted at different time points, and thepercentage of recombinants for each gene was determined bystreaking on a medium that lacked either leucine or thiamine.What information do you know based on the question and your understanding of the topic?

In transformation, a bacterial cell takes up DNA fragments from its surroundings. The figure shows the process of natural transformation. Position the labels below with the correct images. (A) Donor and recipient genomes The donor strand is integrated into the recipient chromosome and the displaced bacterial DNA is degraded. A wild-type donor cell is in the vicinity of a double auxotroph. If the wild-type cell lyses, it releases DNA into the environment. One cell is identical to the original recipient, while the other carries the wild-type genes. A competent recipient cells a receptor site on its surface. One strand of donor DNA enters the cell and pairs with a homologous region of the bacterial chromosome The remaining DNA strand is degraded. A donor DNA strand binds to the receptor site. Reset trpC1 Wild-type donor cell Mechanism of natural transformation Donor DNA hal Receptor site- trpc/his double auxotroph Recipient cell Competent cell recipient -Bacterial chromosome (had.bpC") Ma…

A small section of Saccharomyces cerevisiae gene has the amino acid sequence valine, histidine, cysteine, and lysine. A mutation in the above section of the amino acid sequence resulted in the substitution of amino acid histidine with amino acid glutamine. The mutation in the antisense strand DNA of Saccharomyces cerevisiae gene described above involves a. the substitution of thymine base from GTG b. the deletion of second cytosine base from CAC c. the deletion of second guanine base from GTG d. the substitution of second cytosine base from CAC

If transmission of genetic information from cell to cell is normally achieved by copying the complementary DNA molecules how is this information equally shared between two daughter cells?