two mutational events are sufficient to cause some forms of cancer, what distinguishes familial forms (i.e. those that "run in families") of cancer from spontaneous cases?   A. spontaneous forms inherit both mutations   B. familial forms are caused by chance alone   C. familial forms inherit one mutation   D. there is no difference

Q: An F2 mouse cross of two brown mice produces 63 brown mice, 22 black mice and 29 white mice. What is…

A: The term "epistasis" refers to a situation in which the expression of one gene is masked, blocked,…

Q: 57. male sex organs; unusually small testes A. down syndrome B. edward's syndrome C. patau's…

A: A genetic disorder is an illness caused partially or entirely by a deviation from the usual DNA…

Q: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

A: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

Q: Which pathology leads to an increased risk of Alzheimer’s disease? Select one: a. Homozygosity for…

A: Alzheimer's disease is a type of disease in which brain cells waste away. It a progressive disease…

Q: What degree of differences would you expect to see in the DNA base sequences and epigenetic marks of…

A: Monozygotic twins are born due to splitting of one single fertilized egg into two embryos. They are…

Q: A woman and her spouse both show the normal phenotype for pigmentation, but both had one parent who…

A: Alleles at the alternative forms of a gene that are located on the same locus of a homologous…

Q: Skin color is a trait that is determined by a. strict dominant-recessive inheritance. b. incomplete…

A: Heredity is defined as the transfer of genetic material from parents to offspring. DNA is the…

Q: Which of the following is not true about Queen Victoria of England? * A. She is a carrier of…

A: D. His son Leopold and her daughter had the disease. is not true about Queen Victoria of England.

Q: A person is heterozygous for ear shape. Ear lobes are dominant to no ear lobes. Which would be a…

A: Given that ear lobes In a trait and it can be either ear lobes or no ear lobes .

Q: Why are multiple copies of the X chromosome tolerated?

A: In females, two X are present whereas in males only one X is present. To balance the expression of…

Q: Tay–Sachs disease is a severe autosomal recessive genetic disease that produces deafness, blindness,…

A: Tay-Sachs disease is a neurodegenerative disease that is caused by the mutation of the gene HEXA…

Q: 9) Researchers are interested in studying the health effects of 1-bromopropane, a solvent touted as…

A: There are different types of study designs that are used in the epidemiology. Researchers are…

Q: People are unable to break down trimethyl-amine, a compound in the diet, resulting in a fish-like…

A: Trimethylamine is a chemical compound that has a pungent odor i.e., smelling like rotting fish,…

Q: Northern European descent have a cystic fibrosis allele, but only about 1 in 2,500 of these people…

A: Cystic fibrosis: This is genetic disorder seen rarely in human population. It is caused by defect in…

Q: 5)Would you expect mutations to always produce recessive traits? Why or why not?

A: Mutations are sudden inheritable variations that occur in an organism's genetic material due to…

Q: Males can be said to be ‘weaker’ genetically because they are predisposed to disorders that are a…

A: Males can be said to be ‘weaker’ genetically because they are predisposed to disorders that are a…

Q: Which of the following events are required for a one-cell zygote to develop into an entire organism?…

A: The process where gametes from mother and father i.e., egg cell and sperm fuse together and forms a…

Q: An example of a single gene disorder is O a. Cri-du-chat Syndrome O b. Phenylketournia Patou

A: Cr-du-chat Syndrome : It is a rare genetic disorder which is caused by a missing section on a…

Q: Suppose Nicole recently learned that she inherited a mutant BRCA1 allele from her mother, who had…

A: BRCA1 is a tumor suppressor gene usually expressed in breast cells. It is responsible for repairing…

Q: A male carrier of a recessive somatic mutation marries a female without this mutation. What is the…

A: Recessive somatic mutation is the recessive mutation in the somatic cells of the body that does not…

Q: Cystic fibrosis is a genetic disease caused by a recessive allele.  Two parents without the disease…

A: Cystic fibrosis is a hereditary condition which is caused by mutations in the cystic fibrosis…

Q: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

A: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

Q: Fruit fly segmentation begins during oogenesis and is affected by which maternal genes? (Note…

A: Introduction A gene is the basic unit of heredity, physical and functional. Gens consist of DNA.…

Q: how many chromosomes are present in a human cell during anaphase of mitosis? A. 23 B. 92 C. 22…

A: Cell division is a phenomenon in which parent cell splits and gives rise to new cells . Number of…

Q: What is the phenotype of the gnom mutant?   A. Loss of cell fate   B. Lack of cell-cell…

A: Introduction Auxin is an important plant hormone that regulates cell division and differentiation…

Q: Karyotypes can be used to: Map an individual's chromosomes Il. Determine genetic mutations Ill.…

A: Karyotype is  process in which the chromosome of an individual is paired and kept in orderly…

Q: 1. The process of ____________ results in tissue-specific gene functions. a. orthology b.…

A: Tissue-specific genes These genes are the group of genes that preferentially operate and express…

Q: Which observation led Thomas Morgan to realize that the gene for fruit fly eye color was located on…

A: The genes are present on chromosomes that segregate independently into different gametes. Each…

Q: A recognized set of symptoms that characterize a genetic disorder is a(n)______ . a. syndrome c.…

A: Genetic disorders are caused by genes.

Q: In addition to DNA swapping, another contributor to the uniqueness of eggs/sperm and people is…

A: Mutation  It is defined as a change that takes place in the DNA sequence. This alteration is due to…

Q: Which pathology leads to an increased risk of Alzheimer’s disease? Select one: a. Accumulation of…

A: Alzheimer's disease is a progressive disorder which affects the brain cells to waste away…

Q: How is homologous recombination for DNA repair different from recombination in meiosis? Choose all…

A: Homologous recombination (HR) is a significant DNA repair process in bacteria.  Also, produce…

Q: IV Study the pedigree above. 1. What type of inheritance pattern is depicted?, 2. If the disease is…

A: A pedigree chart shows the family members who are affected by a genetic trait by displaying a family…

Q: Circles are females and squares are males. "a" indicated albinism. Refer to to the figure to show…

A: Albinism is an autosomal recessive genetic disorder that occurs due to loss or lesser production of…

Q: If a mutation in a homeotic gene produced the following phenotypes, would you expect it to be a…

A: Mutation refers to the sudden changes that occur in the sequence of DNA’s (deoxyribonucleic acid)…

Q: What is the purpose of mitosis?  a It ensures that new nuclei have an exact copy of DNA.  b It…

A: Cell cycle includes the series of events that produces two daughter cells.

Q: A young man went to the doctor because he had small testes and enlarged breasts. Through chromosomal…

A: Chromosomal abnormalities occur due to the duplication or deletion of the section or whole of the…

Q: There are three broad categories of cancer-related genes: proto-oncogenes, tumor suppressor genes,…

A: It is an uncontrollable cell division that get metastasized into surrounding tissues.

Q: What is Patient C's karyotype? A. Last song syndrome B. Trisomy 21 C. Marfan syndrome D. Patau…

A: A karyotype is a collection of a species' or an individual organism's full set of metaphase…

Q: This chart shows different patterns of inheritance in four pedigrees. Assume that individuals…

A: The pedigree indicates if the DNA is passed down unchanged from generation to generation. It can…

Q: What is Mendelian inheritance? a. Mendelian genes code an entire phenotype so that children will…

A: Mendelian inheritance "named after Gregor Mendel refers to the transfer of inherited characters via…

Q: When does chromosomal nuclear DNA, which is found inside the nucleus of a eukaryotic cell,…

A: The cell division involves production of new daughter cells from the mother cell. Different…

Q: For genes that control pathways of development, loss-of-function mutations are usually recessive…

A: Small stretches of nucleotides present on the DNA molecule that encodes information for the…

Q: GB A GA Y Y А В G GA Y Y ВА B C D GB Y A E

A: A sex-linked trait is one where the gene for that particular trait is located on the sex chromosome…