Subtelomeres Are Blocks of Homologous DNA Sequences Close to the Ends

question 13

Multiple Choice

Subtelomeres are blocks of homologous DNA sequences close to the ends of chromosomes. When sequences of chromosomes 4q and 10q subtelomeres were analyzed from a world- wide population, only seventeen 4q haplotypes and and eight 10q haplotypes were found among African, European, and Asian groups, making these the least diverse subtelomeres shared by these ethnic groups. Which conclusion do these data support?

• A) a conclusion that assigning chromosomal origin is only possible in a population with the same ethnic origin
• B) a conclusion that all haplotypes were present before the human population migrated from Africa
• C) finding that few or no interchromosomal exchanges can occur among these chromosomes
• D) reporting that haplotype polymorphism shows no response to natural selection
• E) humans have made multiple migrations out of Africa

Recognize the importance of geological conditions in the suitability of sites for dams and other energy infrastructure.

Acknowledge the role of alternative energy sources and their advantages and disadvantages.

Understand the criteria that classify a rock as an ore.

Describe the environmental benefits and challenges of hydroelectric dams.

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Definitions:

Calories

A unit of energy used to quantify the amount of energy provided by foods and beverages.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the fetus via the umbilical cord.

Third Stage

In various contexts, refers to a specific phase in a multi-stage process; its exact meaning can depend on the process being described.

Acrosome

A vesicle at the tip of a sperm cell that helps the sperm penetrate the egg.