Reference no: EM133261860

1. Assume that a male with an X-linked recessive genetic disorder has children with a female who does not have the disorder nor is she a carrier for the disorder allele. Could any of their sons have the genetic disorder? How about their daughters? Could any of their children be carriers for the disorder?

2. With 46 chromosomes in a human diploid cell, how many chromosomes come from the person's mother and how many from the father?

All 46 chromosomes come from the individual's mother.

45 chromosomes come from the individual's mother and only one sex chromosome comes from the individual's father.

Half of the chromosomes come from the individual's mother and the other half come from the individual's grandmother.

Half of the chromosomes come from the individual's mother and the other half come from the individual's father.

3. Match the best term to its description.

1 2 3 homologous chromosomes

1 2 3 sister chromatids

1 2 3 chromosome

1. Two identical copies of DNA

2. Condensed form of DNA wrapped around histone proteins.

3. Consists of 2 replicated chromosomes. Chromosomes contain the same genes.

4. If you were working for a pharmaceutical company trying to develop anticancer drugs, what biological process would be the best target to investigate?

mitosis

meiosis

cellular respiration

5- An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. What is the relationship between the alleles for hair texture?

polygenic

incomplete dominance

pleiotropy

codominance

6. Match the following description with the correct process.

1 2 Used for asexual reproduction or cloning of a cell.

1 2 Used to produce egg or sperm cells.

1 2 Goes through prophase, metaphase, anaphase and telophase two times.

1 2 Produces new cells to replace lost or damaged cells.

1. mitosis

2. meiosis

7. More people die of ____________ cancer than any other type of cancer.

skin

lung

pancreatic

breast

8. Which outcome could help you identify a trait whose expression is determined by the effects of two or more genes (polygenic inheritance)?

A mating between a homozygous and a heterozygous individual produces more than the expected number of offspring expressing the dominant trait.

You notice a wide range of variations of the trait in a population.

Everyone in the population looks the same.

Individuals with the trait die at a young age.

9. Explain how photosynthesis and cellular respiration support life on Earth. Be thorough in your answer.

10. Compare and contrast photosynthesis and cellular respiration. What do they have in common and what are their differences?