Answers PMHS Health Q2Heredity and Genetics

Heredity and Genetics Answers

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Which of the following are types of hereditary disorders?

single-gene and chromosomal

complex and duplex

single-gene and duplex

all of the above

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Which of the following statements BEST describes DNA?

DNA are the same as genes.

All living things contain DNA.

There are three bases that compose DNA.

Billions of people in the world have the same genetic code.

Complex diseases are caused by imperfections in multiple genes.

Chromosomes are composed of DNA.

Heredity refers to the __________.

removal of DNA from the human body

formation of chromosomes from DNA

many types of female genes

passing of traits from parents to children

The normal function of a gene is to __________.

encode a protein

prevent illness

mutate into other cells

determine personality

Amniocentesis is a test in which fluid is removed from the uterus so the baby's genetic composition can be determined.

Genetic research and testing includes __________.

the Human Genome Project

gene therapy

genetically engineering drugs

all of the above

Dominant traits include __________.

cleft chin and attached earlobes

dimples and attached earlobes

dimples and no widow's peak

cleft chin and free earlobes

Which of the following statements BEST describes chromosomes?

Humans have 460 chromosomes in every cell.

Chromosomes are arranged in 230 pairs.

Chromosomes carry the codes for hereditary traits.

Chromosomes are found outside the nucleus of each human cell.

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