Biology questions

Question Description

1. Gregor Mendel was first to demonstrate the existence of genes, despite many experiments in breeding that had preceded him. What two pioneering innovations did Mendel introduce that were essential to his success?

2. Distinguish phenotype from genotype

3. Use of the Polymerase Chain Reaction (PCR) is ubiquitous in biology, medicine, and many other fields. Indeed, PCR is the basis for one of the main diagnostic tests for Corona Virus. What does PCR do that makes it a mainstay in modern life?.

4. You have two plants. Each was derived from a series of inbreeding generations so that now they are homozygous at all loci. One plant has red flowers, the other white flowers. How would you determine if flower color is controlled by a single genetic locus, and if it is, how would you know which trait is dominant?

5. A female carrier for a sex-linked recessive disorder has children with a man lacking the same disorder. It is possible for a son to have the disorder but not a daughter. Explain why.

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