In many organisms, the sex of the organism is determined by its genetic code. In most mammals, including humans, the sex of the organism is determined by genes that fall on specific chromosomes called the X and Y chromosomes. Most mammals have two sex chromosomes. A mammal cell with two X chromosomes is from a organism and a mammal cell with one X and one Y chromosome is from a organism. In humans, the SRY gene is responsible for in cells. This gene occurs on

In many organisms, the sex of the organism is determined by its genetic code. In most mammals, including humans, the sex of the organism is determined by genes that fall on specific chromosomes called the X and Y chromosomes. Most mammals have two sex chromosomes. A mammal cell with two X chromosomes is from a organism and a mammal cell with one X and one Y chromosome is from a organism. In humans, the SRY gene is responsible for in cells. This gene occurs on

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter13: Genes, Chromosomes, And Human Genetics

Section: Chapter Questions

Problem 3ITD

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The continuity of life depends on a cell cycle during which genetic information is passed from a parent cell to daughter cells. Because cell division plays several important roles in life, it is important that the cycle be regulated. Which of the following are reasons the cell cycle must be regulated? Select all that apply. The continuity of life depends on a cell cycle during which genetic information is passed from a parent cell to daughter cells. Because cell division plays several important roles in life, it is important that the cycle be regulated.Which of the following are reasons the cell cycle must be regulated? Select all that apply.[ ]To make sure cells only divide when conditions are favorable for growth and development of the organism[ ]To make sure daughter cells end up with the right number of chromosomes[ ]To make sure daughter cells are genetically different from the parent cell[ ]To allow cells to respond to cues from their internal state and from their environment.
X-Chromosome Inactivation in mammals results in the formation of what structures that can be seen in the nucleus? a Spliceosomes b Mitochondria c Nuclear Envelope d Barr Bodies e Nuclear Colorations
In humans, n = _______, so human somatic (body) cells have _____ chromosomes A) 46...46 B) 23...46 C) 23...23 D) 46...92 E) 2...46
A cultured mouse cell line has a mutation in a gene encoding a ribosomal protein. The mutant protein impairs the fidelity of translation such that incorrect amino acids are incorporated at higher rates than normal during protein synthesis. It also slows the rate of mRNA translation and increases the duration of the cell cycle, i.e., the mutant cells grow and divide more slowly. Researchers noted that these cells express higher levels of chaperone proteins than normal cells. Which of the following is the most likely explanation for the elevated chaperone levels.
Which of the following statements regarding X-inactivation is TRUE?(posted) Inactivated X chromosomes are only found in somatic cells of females. After X-inactivation happens in a cell, all daughter cells resulting from mitotic events of that cell will have the same X chromosome ina none of the statements listed here are true X-inactivation is a random event that happens during human development right before a fetus is born. all of the statements listed here are true)
Is it acceptable or not to edit the genome of human embryos to treat genetic diseases? There is a group of genetic disorders that cause fatal childhood diseases. To avoid having children with these genetic disorders, some parents choose to use a procedure called in vitro fertilization (IVF) followed by genetic testing. Typically, in the first step of IVF, women receive hormone injections to produce multiple eggs, after which the eggs are harvested. The eggs are then fertilized by sperm in a petri dish to make embryos, which are then transferred to a woman's uterus. If the goal is to identify embryos that do not have specific genetic conditions, doctors would screen the embryos before they are implanted into the woman - in other words, they would analyze the embryos' DNA to look for variants of the gene(s) that cause the genetic disorder. While the genetic testing of IVF-produced embryos has been done for decades, the procedure is controversial. The controversies include worries that…
How does gene expression influence the behavior of cells that contain the same genome (genetic information)? In other words, why do cells that belong to the same multicellular organism have a different structure and function?
Fragile X syndrome, caused by a change in the FMR1 gene, is the most common form of intellectual disability. In patients with this syndrome, a small part of the gene is repeated several times in one area of the chromosome. This defect in the gene makes the body unable to produce adequate amounts of a protein needed for normal brain functioning. In males, this syndrome causes a moderate intellectual disability, and in females, a mild intellectual disability. A family that exhibits Fragile X syndrome is shown in the pedigree. In the pedigree, squares represent males and circles represent females. Shaded symbols represent a person with the disorder. Which of the following correctly predicts the outcome if offspring 11 mated with a homozygous normal female, based on the inheritance pattern shown in the pedigree? A - The male offspring would exhibit Fragile X syndrome because Fragile X is an X-linked recessive trait. B - The female offspring would exhibit Fragile X syndrome because Fragile…
Fragile X syndrome, caused by a change in the FMR1 gene, is the most common form of intellectual disability. In patients with this syndrome, a small part of the gene is repeated several times in one area of the chromosome. This defect in the gene makes the body unable to produce adequate amounts of a protein needed for normal brain functioning. In males, this syndrome causes a moderate intellectual disability, and in females, a mild intellectual disability. A family that exhibits Fragile X syndrome is shown in the pedigree. In the pedigree, squares represent males and circles represent females. Shaded symbols represent a person with the disorder. Which of the following correctly predicts the outcome if offspring 11 mated with a homozygous normal female, based on the inheritance pattern shown in the pedigree? The male offspring would exhibit Fragile X syndrome because Fragile X is an X-linked recessive trait. The female offspring would exhibit Fragile X syndrome because Fragile X…
Which of the following statements is INCORRECT? Synapsis of the X and Y chromosomes in males occurs only at the pseudoautosomal regions. Genes in the pseudoautosomal regions on the Barr body X chromosome escape inactivation. Nonhomologous regions of the X and Y chromosome condense to form a sex vesicle during leptotene. Although one of the two X chromosomes in XXY males becomes a Barr body, XXY males have three doses of the genes in the PAR regions.
According to the Lyon hypothesis,a. one of the X chromosomes is converted to a Barr body insomatic cells of female mammals.b. one of the X chromosomes is converted to a Barr body in allcells of female mammals.c. both of the X chromosomes are converted to Barr bodies insomatic cells of female mammals.d. both of the X chromosomes are converted to Barr bodies inall cells of female mammals.
Please help Place the images of the cell division in the right order and label them a) What is the final product of this type of cell division? Indicate the number of dauahter cells, the TYPE OF CELLS (somatic cells? sex cells? other?), where in the body this process takes place, whether they are genetically diverse pridentical, haploid or diploid, the chromosome number in human cells, whether they contain sinale- or double-stranded chromosomes, and what the "fate" of these cells is i.e. what will they go on to do, if given the chance)?