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Multiple alleles and codominance are important concepts in genetics. The ABO blood groups represent a well-known example of these concepts. Answer the following questions to gain a greater understanding of these concepts: • What blood type(s) can a child born to a mother with B- blood type and a father […]

Imagine a beaker with solutions separated by a plasma membrane (like what is shown in the figure, step 3). Predict what will happen after addition of a new solute to the solution on the left side if the new solute (1) crosses the membrane readily or (2) is incapable of […]

Q. 1. Modern theory suggests that an early (pre-life) atmosphere on Earth was a reducing one. Why (for what reasons) is it believed that oxygen was not present while life formed on Earth? 2. What proposed energy sources existed on this early (pre-life) Earth? 3. In 1950s, Stanley Miller performed […]

1. What is the difference between genotype and phenotype? 2. What is the difference between haploid and diploids? 3. What is the difference between a null mutation and a conditional mutation? 4. What are the two types of conditional mutations? 5. What is the difference between a genetic selection and […]