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Ch17Review
Chapter 17 Review
| Question | Answer |
|---|---|
| _________________ is controlled by a gene with multiple(3) alleles. –pg. 589 | Blood type |
| ______________________ are three or more forms of a gene that code for a single trait. – pg. 589 | Multiple alleles |
| If two parents with blood type genotypes IAIA and IBIB are crossed, the offspring would have ______________________ blood. –pg. 589 | Type AB |
| When many genes control a trait, the trait will show a large number of ______________________. – pg. 590 | phenotypes |
| A person’s surroundings, or ______________________, can change the effects of a person’s genes. –pg. 590 | environment |
| Since the late 1800s, improvements in people’s _______________ have led to an increase in the average height of adults in the United States. –p.g 590 | diet |
| ______________________ is determined by variations in environment. –pg. 590 | Height |
| ______________ sex chromosomes result in a human male. – pg. 591 | XY |
| ______________ sex chromosomes result in a human female. – pg. 591 | XX |
| An egg fertilized by a sperm cell with an ____________ chromosome will develop into a female. –pg. 591 | X |
| A ______________________ is a person who has one recessive and one dominant allele for a trait. –pg. 592 | carrier |
| ______________________genes are genes on the X and Y chromosomes. –pg. 592 | sex linked |
| Sex-linked traits are more common in males than in females because a recessive allele on the __________ chromosome will produce the trait in a male. – pg. 592 | X |
| A recessive allele for a trait can be passed to offspring by a ______________________, who does not show the trait. –pg. 592 | carrier |
| For a girl to be colorblind, each parent must have the ______________________ allele for colorblindness. –pg. 592 | recessive |
| A ______________________ is a chart or “family tree” that tracks which members of a family have a particular trait. –pg. 593 | pedigree |
| A geneticist uses pedigrees to ______________________ the inheritance of traits through generations of families. – pg. 593 | trace |
| A ______________________ represents a female on a pedigree. – pg. 594 | circle |
| A ______________________ represents a male on a pedigree. – pg. 594 | square |
| When the circle or square is ______________________ shaded, the person on the pedigree has the trait. – pg. 594 | completely |
| When the circle or square is ______________________, the person carries the trait. – pg. 594 | half shaded |
| ___________________________________ are caused by mutations. –pg. 595 | Genetic disorders |
| ______________________ results in abnormally shaped blood cells. –pg. 596 | Sickle-cell disease |
| ______________________ causes the body to produce unusually thick mucus in the lung and intestines. –pg. 596 | Cystic fibrosis |
| Down syndrome most often occurs when chromosomes fail to separate properly during ______________________. –pg. 598 | meosis |
| Down syndrome is caused by the presence of an extra copy of a ______________________. –pg. 598 | chromosome 21 |
| An ______________________ is a procedure used by doctors to diagnose a genetic disorder before a baby is born. –pg. 598 | amniocentesis |
| A ______________________ is a picture of the chromosomes in a cell. –pg. 599 | karyotype |
| ______________________ involves crossing two individuals that have identical or similar sets of alleles. - pg. 603 | Inbreeding |
| Cloning results in two organisms that are genetically ________________. –pg. 604 | identical |
| No two people have the same DNA, except for ____________________. –pg. 607 | identical twins. |
| Police use DNA ______________________ to help solve crimes by comparing a suspect’s DNA patterns with evidence from a crime scene. – pg. 607 | fingerprinting |
| The main goal of the Human Genome Project is to identify the DNA sequence of every gene in the human ______________________. – pg. 608 | genome |
Created by:
lschramme
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