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Bio I Ch. 14
Ch. 14.3
| Question | Answer |
|---|---|
| True or False Genetic tests are now available for hundreds of disorders making it possible for parents to consider the risk of passing on defective alleles. | True |
| What is it called when DNA is used to identify individuals? | DNA fingerprinting |
| Name the ongoing effort to analyze and map the human DNA sequence. | The Human Genome Project |
| Name the technique of replacing an absent or faulty gene with a normal working gene. | gene therapy |
| Can a colorblind female have a normal color vision son? | No |
| What is being used to transfer a healthy copy of a gene into cells with defective genes? | virus |
| What is the approximate probability that a human offspring will be female? | 50% |
| What is shown in a karyotype? | homologous chromosomes, sex chromosomes, and autosomes |
| Does BB and Bi result in the same blood phenotype? | yes |
| If you have PKU, did you inherit a recessive allele from each parent? | yes |
| A boy who has hemophilia inherited the disorder from his _______________. | mother |
| A person can be tested for the allele that causes Tay-Sachs disease because the ___________________ of that allele is different from that of the normal allele. | DNA sequence |
| A(n) ________ can be used to determine whether a person has inherited the normal number of chromosomes. | karyotype |
| Which blood type alleles are codominant? | A and B |
| Which blood type alleles are not codominant? | A and i or B and i |
| People who have sickle cell disease inherited ________ copy(ies) of the sickle cell allele. | two |
| A man who does not have hemophilia and a woman who is a carrier of the disorder have a son. What is the probability that their son has hemophilia? | 50% |
| Name the condition of XXY sex chromosomes. | Klinefelter's syndrome |
| Name the condition of XO sex chromosomes. | Turner's syndrome |