Which of the following describes the difference between genetic maternal effect and cytoplasmic inheritance? O Progeny from a Genetic Maternal Effect cross express the phenotype of their mother's genotype, while progeny from a cytoplasmic inheritance cross share a genotype and phenotype of their mother. Progeny from a Genetic Maternal Effect cross have a phenotype that reflects their own genotype, while progeny from a cytoplasmic inheritance cross share a genotype and phenotype with their mother. Progeny from a Genetic Maternal Effect cross have the same genotype as their mother, while progeny from a Cytoplasmic Inheritance cross do not. There is no difference.
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Maternal is a term related to the mother.
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- Extranuclear inheritance often correlates with maternal inheritance. Even so, paternal leakage may occur. What is paternal leakage? If a cross produced 200 offspring and the rate ofmitochondrial paternal leakage was 3%, how many offspringwould be expected to contain paternal mitochondria?Which of the following is not one of the tenets of the chromosome theory of inheritance?a. Chromosomes contain the genetic material that is transmitted from parent to offspring and from cell to cell.b. Chromosomes are replicated and passed along, generationafter generation, from parent to offspring.c. Chromosome replication occurs during the S phase of thecell cycle.d. Each parent contributes one set of chromosomes to itsoffspring.Zoe has cystic fibrosis. Which of the following is themost likely explanation?a. Zoe probably inherited one faulty allele from herfather, who is a carrier, and one normal allelefrom her mother.b. Zoe probably inherited one faulty allele from hermother, who must also have cystic fibrosis, andone normal allele from her father.c. Zoe must have inherited faulty alleles from bothparents, both of whom must also have cysticfibrosis.d. Zoe must have inherited faulty alleles from bothparents, both of whom are carriers.
- Now that you have finished the Chromosomal Basis of Inheritance chapter, read the following prompt and discuss with your classmates the possible conclusion(s). Provide one response and provide substantive feedback to at least 2 classmates. Crossing over, or recombination, is thought to be evolutionarily advantageous because it continually shuffles genetic alleles into novel combinations. Until recently, it was thought that Y-linked genes might degenerate because they have no homologous genes on the X chromosome with which to recombine. However, when the Y chromosome was sequenced, eight large regions were found to be internally homologous to each other, and quite a few of the 78 genes represent duplicates. How might this be beneficial?In guinea pigs, the allele for black fur (B) is dominant over the allele for brown (b) fur. A black guinea pig is crossed with a brown guinea pig, producing five F1 black guinea pigs and six F1 brown guinea pigs. Q. How many copies of the black allele (B) will be present in each cell of an F1 black guinea pig at the following stages: G1, G2, metaphase of mitosis, metaphase I of meiosis, metaphase II of meiosis, and after the second cytokinesis following meiosis? Assume that no crossing over takes place.. Which of the following inheritance patterns was observed, in the experiments of Alfred Hershey and Martha Chase, using the T2 bacteriophage of Escherichia coli? radioactive proteins were passed on to viral progeny, but not radioactive polynucleotides radioactive polynucleotides were passed on to viral progeny, but not radioactive proteins both radioactive proteins and radioactive polynucleotides were passed on to viral progeny both radioactive polynucleotides and radioactive proteins were passed on to viral progeny neither radioactive proteins nor radioactive polynucleotides were passed on to viral progeny The Hershey / Chase experiments (above) demonstrated that the T2 bacteriophage uses: phosphate-containing molecules for its genetic material, but not sulfur-containing molecules sulfur-containing molecules for its genetic material, but not phosphate-containing molecules both phosphate-containing and sulfur-containing molecules for its genetic material both sulfur-containing…
- Whether the statement "In the small intestine, stem cells in the crypts divide asymmetrically to maintain the population of cells that make up the villi; after each division, one daughter remains a stem cell and the other begins to divide rapidly to produce differentiated progeny" is true or false.Extranuclear inheritance can involve genes that are present in: ribosomes mitochondria autosomes sex chromosomes In humans, which of the following would be phenotypically male? Question 5 options: XO individuals XX individuals XXY individuals XXX individuals Presence of an abnormal number of copies of an individual chromosome in a cell is a condition known as: triploidy heterogamy aneuploidy polyploidyIn individuals affected by cystic fibrosis, salt crystals may appear afterperspiration dries up. In addition, the disease causes respiratory disorderswhich can be both debilitating and lethal. It occurs in individuals homozygousfor the recessive gene. Two normal parents had a daughter with thesymptoms of this disease, and a normal son who marries a normal womanwith an afflicted A test (salt concentration in perspiration of heterozygotes ishigher than normal) disclosed that both are indeed carriers of the gene. If thefirst child born to the mating in (b) was defective, what is the probability thatthe 2nd child would also be defective?Express answer in fraction form
- Which of the following statements applies to non-sister chromatids? they are genetically identical they segregate from each other at anaphase of mitosis they contain the same genes in the same order but may have different alleles they are attached to each other at the centromere"In the small intestine, stem cells in the crypts divide asymmetrically to maintain the population of cells that make up the villi; after each division, one daughter remains a stem cell and the other begins to divide rapidly to produce differentiated progeny" is true or false.An equational division of mitosis is occuring for a diploid organism that has three heterologous chromosomes. One acrocentric, one metacentric and one telocentric. The organism is tetrahybrid and heterozygous for dominant and recessive alleles at four different loci. The parental genotypes were AAbbCCDD and aaBBccdd. Locus A and B are on the telocentric chromosome. Locus C is on a metacentric chromosome. Locus D is on the acrocentric chromosome. Part A: How many chromosomes are observed during anaphase? Part B: For cells of this organism that undergo meiosis, how many tetrads are observed during metaphase I? Part C: What is the n value for this organism?