All of the following may be found in a DNA nucleotide EXCEPT: 

Patau Syndrome is a chromosomal condition known as Trisomy 13 and is caused by a translocation. Surviving children with this condition have several developmental disabilities, polydactyly, and multiple organ defects among other issues. Explain what Trisomy 13 means, what a translocation is, and when it might occur during meiosis.

The ant Myrmecia pilosula has the smallest number of chromosomes possible in a eukaryote: females possess only one pair of chromosomes, and males have only one chromosome! Put another way, female M. pilosula can be described as having the haploid condition n = 1 and the diploid condition 2n = 2. Based on this scenario as well as your knowledge of gamete formation, a female M. pilosula can produce gametes with ________ different sets of chromosomes. 

Which statement is TRUE of the behavior of chromosomes in mitosis? 

If meiosis did NOT occur in sexually reproducing organisms: 

Which of the following occurs in the nucleus? 

Scenario You have an artificial cell with a selectively permeable membrane that allows water to pass through but not sugar. Inside the cell: 1% sugar solution Outside the cell: 2% sugar solution Question How do these concentrations immediately effect the movement of water, and why? Be specific about the direction of water flow and the reasoning behind it.

Background Cystic fibrosis is a genetic disease that causes thick mucus buildup in the respiratory tract, leading to frequent infections. This is due to a faulty membrane protein responsible for the passive transport of chloride ions (Cl⁻). Although the protein is present in cell membranes, it does not function properly. Imagine you’re zooming in on a cell in someone with cystic fibrosis. Question What is going wrong at the level of molecules and ions within that cell? Specifically, explain how the problem with chloride ion (Cl⁻) movement affects the way the cell produces and handles mucus.

The most common presenting symptom for inflammatory breast cancer is a palpable mass.

In the fetal circulation, the ___________ carries blood away from the placenta.