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The diploid chromosome number of the common pea plant, Pisum sativum, is 14 (2n = 14). After completing meiosis, how many chromosomes would you find in each pea gamete?

A researcher has been using CRISPR-Cas9 to edit the TYR gene in mouse cells. She now wants to use the same system to edit a different gene, OCA2. Which component of the CRISPR-Cas9 system must she redesign so that it targets OCA2 instead of TYR?

Which of the following statements best describes the relationship between an organism’s genotype and phenotype?

List, describe the function, and provide an example of the four main organic molecules found in the human body.

You have identified the mutation in a p53 gene responsible for an aggressive type of lung cancer. The mutation is highlighted in red and underlined in the DNA template strand data below. What type of mutation is it? [blank1] What change does the mutation cause? [blank2] Normal p53 Sequence: AATGCACAACCATTGCCAMutant p53 Sequence: AATGCACCACCATTGCCA

Most traits are quantitative, meaning they exhibit continuous variation in a population. This is exemplified in the graph below for beak width in a population of finches. Continuous variation in a trait like beak width suggests that the trait is determined by…

The APC gene is a tumor-suppressor gene that regulates the cell cycle. Mutations in APC are associated with the development of colorectal cancer. As a tumor-suppressor gene, how do you expect mutations in APC to disrupt the cell cycle?

In the spring of 2020, CRISPR-Cas9 was used in a pilot study to see if it could be used to eliminate blindness in people with Leber’s congenital amaurosis 10 (LCA10). In this trial experiment, patients had targeted CRISPR-Cas9 injected underneath their retinas, where it would hopefully edit a mutation in the CEP290 gene that is responsible for the condition. Genetic technology used to treat a disease in an individual is known as ________.

You have identified the mutation in a p53 gene responsible for an aggressive type of lung cancer. The mutation is highlighted in red and underlined in the DNA template strand data below. What type of mutation is it? [blank1] What change does the mutation cause? [blank2] Normal p53 Sequence: AATGCAACCCCATTGMutant p53 Sequence: AATGCAATCCCATTG

In a clinical trial for hemophilia B, a bleeding disorder caused by mutations in the gene for clotting factor IX, researchers evaluated an AAV-vector gene therapy delivering a functional factor IX gene. Three cohort groups received a single intravenous infusion at different doses (low, medium, and high), while a fourth cohort received a placebo infusion. After one year, researchers measured factor IX activity in the blood and recorded the number of bleeding episodes for each participant. What is the independent variable in this experiment?