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

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

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?

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

The effect of Barr body formation is that

maternal disomy

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

Which pairing is correct?

Cri du chat syndrome (),XY,()

chromosome number of healthy person

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

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?

What does it mean normal karyotype?

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

PCR is used to:

chromosome number of turner syndrome

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?

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

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

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

Not true about human genome

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

Robertsonian translocations usually involve metacentric chromosomes.

How are Klinefelter and Turner related

The effect of Barr body formation in mammals is that_______

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

chromosome number of Edwards syndrome

In X inactivation all of X genes are inactivated

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

Taq polymerase:

How are Klinefelter and Turner syndromes related?

What kind of chromosomal aberration can cause CML or ALL?

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

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

A person has 3 barr bodies, what is true?

The substitution of one nucleotide for another is known

How can archeologist obtain enough DNA from unearthed human bones?

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

Southern blotting is:

What is the function of Anaphase promoting complex?

Both sickle cell anemia and hemophilia

All of the following statements regarding genetic mutations are true EXCEPT

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

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

Which statement if FALSE for inheritance?

Pleiotropy refers to:

What is complex heterozygocy？

X inactivation

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

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

Which cells are haploid in the process of spermatogenesis?

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

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:

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?

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

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

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?

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

What is the mode of inheritance of color blindness?

chromosome number of triploid zygote

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:

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

Which region highly variable?

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 is true in connection with the spermatogenesis?

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?

What does it mean normal karyotype?

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.

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

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

What is the proble, leading to anaphase bridge formation?

associated with imprinting failure for 15

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

Which of the following is NOT true about mtDNA?

Which of the following defines the pseudoautosomal region?

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:

In vitro DNA synthesis requires the activity of _________

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

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

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

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

uniparental dysomy

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

different allelic combinations lead to similar phenotypes?

chromosome number of polar body after meiosis2

paternal disomy for 15