Consider a hypothetical allele that is lethal, like the Tay–Sachs allele, but is dominant rather than recessive. Assume that this allele has a frequency of 0.02, like the Tay–Sachs allele. Recalculate the answers to 3a, 3b, and 3c. Is selection stronger against the recessive allele or the dominant one? Why? Assuming that mutation to the deleterious allele occurs at the same rate at both loci, which allele will occur at a higher frequency? Why?

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

Choose the molecule that is described by each phrase. energy used during long activities:

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis