A person with two or more different cell lines originating from a single zygote is called a:

A person has 3 barr bodies, what is true?

The effect of Barr body formation in mammals is that_______

What does it mean normal karyotype?

Which of the following is the description of an individual with cri-du-chat syndrome?

Which of the following represents the best description for the movement of a fragment of the short arm of chromosome 6 to the long arm of chromosome 8 and concurrently, moving the fragment that should have been on the long arm of chromosome 8 to the short arm of chromosome 6?

How are Klinefelter and Turner syndromes related?

Some mutations have been found that are expressed differently depending on the set of the parent the gene is passed through. This is called _______

An interstitial deletion of paternal chromosome subregion 15q11-q13 results Prader- Willi syndrome (PWS). The deletion of the same subregion of maternal chromosome results another disease Angelman syndrome. The reason for this is:

How many tetrads are found in meiotic prophase in an organism with a diploid number of 12?

A human genetic defect that is caused by non-disjunction of sex chromosome is

Robertsonian translocations usually involve metacentric chromosomes.

A 47, XXY may be caused by the non disjunction of

The effect of Barr body formation is that

What does it mean normal karyotype?

In X inactivation all of X genes are inactivated

Cri du chat syndrome (),XY,()

How are Klinefelter and Turner related

associated with imprinting failure for 15

paternal disomy for 15

maternal disomy

uniparental dysomy

X inactivation

The substitution of one nucleotide for another is known

Which one of the following statements regarding genetic polymorphism is correct?

207.Which is the modern definition of the genetic polymorphism?

A point mutation that changes a codon specifying an amino acid into a stop codon is called a:

Which mutations would cause a frameshift and this likely be the most detrimental?

33. Which statement is NOT true about X and Y chromosomes?

Which statement if FALSE for inheritance?

Which cells are haploid in the process of spermatogenesis?

A human female is born with ________ cells in the primordial follicles of her ovaries

Why would you predict that half of the human babies will be males and half will be females?

Which is true in connection with the spermatogenesis?

Which is true in connection with the ovogenesis? (oogenesis)

Which of the following is NOT true about mtDNA?

A cystic fibrosis mutation screen of an affected child reveals that he carries the Delta F508 mutation on one chromosome and the G551D mutation on the other chromosome. Which of the following terms best describes his situation?

Myotonic dystrophy may show increasing severity and earlier age of onset in successive generations. This phenomenon is known as:

In people with sickle cell disease the red blood cells breakdown, clump, and clog the blood vessels. The broken cells accumulate in the spleen. Among other things this leads to physical weakness, heart failure, pain, brain damage and spleen damage. Affected individuals become paralyzed and can develop rheumatism, pneumonia and other diseases and kidney failure. This is an example of:

Pleiotropy refers to:

Polydactyly (extra finger) is a dominant trait in humans. A person who has polydactyly has parents who do not have polydactyly, and a maternal grandfather who does have polydactyly. What is the most likely explanation for this?

Duchenne muscular dystrophy and Becker muscular dystrophy have different phenotypes, but they result from mutations in the same gene. This is an example of:

What is it: The same genetic variations or genotype combinations simultaneously affect more than one phenotype trait?

Hemophilia A and hemophilia B have nearly identical phentoypes, but they result from a mutation in different genes on the X chromosome. This is an example of:

Which of the following defines the pseudoautosomal region?

How can archeologist obtain enough DNA from unearthed human bones?

Huntington’s disease is an example of a genetic disorder caused by

What is complex heterozygocy？

Which one of these is caused by repeats of base triplets rather than a whole chromosome?

In a group of 100 women with the genotype for widow’s peak in the hairline, only 87 actually exhibited the trait. This is an example of:

different allelic combinations lead to similar phenotypes?

Marfan syndrome, a dominant single-gene defect, is characterized by lens dislocation, long limbs, spndly fingers, a caved-in chest and a weakened aorta. This is an example of a(n):______ trait.

Taq polymerase:

What is the function of Anaphase promoting complex?

In vitro DNA synthesis requires the activity of _________

Huntington disease is a deadly dominant disease. How can this allele be transmitted from one generation to another if one copy is enough to make the carrier die?

Which of the following statements regarding mutations causing Huntington Disease is FALSE?

Which technique would be most suitable for testing the hypothesis: Treating an estrogen-responsive cell line with estrogen gives a five-fold increase in the level of a specific mRNA with a length of 1800 nucleotides

PCR is used to:

Both sickle cell anemia and hemophilia

A grandfather and grandson both have ectrodactyly, but the intervening father has normal hands by X-ray. Which of the following terms would most appropriately apply to the trait in this family

All of the following statements regarding genetic mutations are true EXCEPT

Huntington chorea may show increasing severity and earlier age of onset in successive generations

What is the proble, leading to anaphase bridge formation?

What kind of chromosomal aberration can cause CML or ALL?

Which of the following represents the best description for the movement of a fragment of the short arm of chromosome 6 to the long arm of chromosome 8 and concurrently, moving the fragment that should have been on the long arm of chromosome 8 to the short arm of chromosome 6?

Genes of which of the following are coded on the Y chromosome:

What is the approximate percentage (%) of human DNA that codes for proteins?

chromosome number of polar body after meiosis2

chromosome number of turner syndrome

chromosome number of healthy person

chromosome number of Edwards syndrome

chromosome number of triploid zygote

Which type of atypical mitosis can lead to polythene chromosomes and polyploid cells?

Southern blotting is:

Archaeologists unearthed a human skull with a small dried fragment of the scalp still attached. They extracted a tiny amount of DNA from the scalp tissue. How could they obtain sufficient DNA for an analysis of the ancient human’s genes?

A woman carries a Robertsonka translocation with 45, XX rob (21,21). What can be the possible consequences of her pregnancy?

movement of a fragment of the long arm of chromosome 13 centromer region of chromosome 14?

A point mutation that changes a codon specifying an amino acid into a stop codon is called a..

What is the mode of inheritance of color blindness?

Which of the following is the molecular cause of xeroderma pigmentosum?

In a healthy two years old boy, what phase the gametogenesis can be found?

Which pairing is correct?

Not true about human genome

Which region highly variable?

Which one of these is caused by repeats of base triplets rather than a whole chromosome