Exam 8: DNA Detective: Complex Patterns of Inheritance and Dna Profiling

What pattern of inheritance is occurring if one person in a population has two different alleles of a particular gene and other people in the population have a third allele of this gene?

When comparing the DNA fingerprints of a parent and child, the parent's DNA fingerprint will have which of the following genetic traits?

What does a half-shaded circle represent on a pedigree chart?

In humans, the allele for red-green color blindness is X-linked and recessive (Xʳ; the dominant allele is called Xᴿ). A man with normal color vision marries a color-blind woman who gives birth to a color-blind daughter. What can be inferred from this information?

How would the pattern of inheritance for Rh factor be best described?

Polydactyly is a dominant trait. What symbol on a pedigree chart would represent a male who has polydactyly?

What pattern of inheritance results when the phenotype of a heterozygote is intermediate between both homozygotes?

In human ABO blood types, what description applies to the alleles for A and B because they're both expressed?

-What information can be inferred about Queen Victoria based on a pedigree of the British royal family?

Hemophilia is a genetic disease that has plagued the royal houses of Europe. The disease allele is recessive and X-linked. Queen Victoria was a carrier, and her granddaughter Alexandra married Nicholas II, the last czar of imperial Russia. Alexandra was a carrier for hemophilia; Nicholas was normal. Their son, Alexis, was afflicted with the disease. Alexis and his four sisters were killed in 1917. What genetic traits were possible for the four sisters?

Y-linked genes include a gene that produces hairy ears. Which offspring would receive this trait from a male with hairy ears?

Queen Elizabeth II of England is a descendant of Edward VII of England, who was the son of Queen Victoria. Edward VII did not have hemophilia. Prince Philip, who is married to Queen Elizabeth II, is a descendant of Alice, the daughter of Queen Victoria. Alice was a carrier of hemophilia. However, Prince Philip does not have hemophilia. What can you infer about the children of Queen Elizabeth II and Prince Philip?

Why must DNA fragments be denatured during the polymerase chain reaction?

In addition to excessive bleeding, persons with hemophilia may have excessive bruising, pain, and swelling in the joints, vision loss, anemia, or neurological problems. What process results from the effects of a single gene loss?

What blood type would a person who is homozygous recessive for all blood type alleles have?

Which type of forensic evidence was available for scientists studying the case of the Romanovs?

What genetic phenomenon occurs when a dominant allele has different effects between heterozygous individuals and homozygous individuals?

What types and numbers of chromosomes are found in humans?

What are VNTRs?

What pattern of inheritance includes the AB blood type, in which both A and B alleles are expressed?