BROOKER BIOLOGY
5th Edition
ISBN: 9781307656152
Author: BROOKER
Publisher: MCG/CREATE
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Textbook Question
Chapter 18, Problem 10TY
Extranuclear inheritance occurs because
- a. certain genes are found on the X chromosome.
- b. chromosomes in the nucleus may be transferred to the cytoplasm.
- c. some cellular organelles contain DNA.
- d. the nuclear membrane breaks apart during cell division.
- e. both a and c.
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Extranuclear inheritance occurs due toa. chromosomes that may become detached from the spindleapparatus during meiosis.b. genetic material that is found in chloroplasts andmitochondria.c. mutations that disrupt the integrity of the nuclearmembrane.d. none of the above
A cytoplasmic determinant can control development at the early stages of development because....?
Group of answer choices
a. it is a universal activator of all genes
b. it is present evenly throughout the cytoplasm
c. it is activated by cell division
d. it is controlled by genes present in the cytoplasm
e. it is laid down in the egg cell by the mother
Which of the following best describes the concept of cell differentiation during the development of a multicellular organism?
A. During development, all of the genes in the embryo's cells are expressed at first, but fewer and fewer are expressed as time proceeds.
B. During development, different sets of genes are deleted from different cell types so that at the end of development, each cell has only the genes it needs.
C. During development, different cells become specialized to have different phenotypes even though they all originated from the same cell.
..
Chapter 18 Solutions
BROOKER BIOLOGY
Ch. 18.2 - Prob. 1CCCh. 18.3 - Prob. 1CCCh. 18.3 - Prob. 1CSCh. 18.5 - Prob. 1CSCh. 18.5 - Prob. 1CCCh. 18.6 - Prob. 1EQCh. 18.6 - Prob. 2EQCh. 18.6 - Prob. 3EQCh. 18.6 - Prob. 1CCCh. 18.6 - Prob. 2CC
Ch. 18 - Which of the following is an example of an...Ch. 18 - Prob. 2TYCh. 18 - A female mouse that is Igf2 Igf2 is crossed to a...Ch. 18 - Prob. 4TYCh. 18 - Prob. 5TYCh. 18 - Prob. 6TYCh. 18 - Prob. 7TYCh. 18 - Prob. 8TYCh. 18 - Based on the ideas proposed by Morgan, which of...Ch. 18 - Extranuclear inheritance occurs because a. certain...Ch. 18 - Define epigenetics. Are all epigenetic changes...Ch. 18 - What is a Barr body? How is its structure...Ch. 18 - Core Concept: Information A core concept of...Ch. 18 - Prob. 1COQCh. 18 - Mendel studied seven traits in garden pea plants,...
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- The use of chemotherapy drugs that interfere with the cell cycle is avoided during pregnancy. This is because they: a. Ingibit the synthesis of proteins by the mitochondria. b. Block the production of ATP by the ribosomes. c. Interfere with the ability of the fetal cells to replicate. d. Cause nondisjunction of the chromosomes, causing fetal cells to have two of each chromosome instead of three.arrow_forwardThe chromosomal theory of inheritance states thata. chromosomes contain DNA.b. humans have 23 pairs of chromosomes.c. all cells have genes.d. genes are on chromosomes.arrow_forwardThe chromosomal theory of inheritance states that genes are on chromosomes. Therefore, any chromosomal abnormality will affect the number and location of genes therefore lead to the over- and under- expression of genes. Which of the following condition will NOT result in the over-expression of a gene? A. Trisomy 18 B. Triploidy 3n C. Monosomy X D. Duplication of a chromosome segmentarrow_forward
- 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.arrow_forwardWhich of the following is a possible explanation for pleiotropy?a. The expression of a single gene can affect cell function in morethan one way.b. A gene may be expressed in different cell types in a multicellularorganism.c. A gene may be expressed at different stages of development.d. All of the above are possible explanations.arrow_forwardIn an organism’s genome, autosomes are a. the chromosomes that differ between the sexes. b. chromosomes that are involved in sex determination. c. only inherited from the mother (maternal inheritance). d. all of the chromosomes other than sex chromosomesarrow_forward
- When the phenotype of the offspring is determined by endoparasites in the father it is… a. epistasis b. due to genes located in the mitochondria. c. a maternal effect d. non-nuclear inheritance e. a non-additive genetic effectarrow_forwardMarfan Syndrome is a dominant trait inheritance in humans. It is a disorder that affects the connective tissue in many parts of the body. 1. What is/are the possible genotype/s of the children if both parents do not exhibit Marfan Syndrome disease? A. mm only B. Mm only C. MM only D. MM or Mm E. Mm or mm 2. What is the probability of having a normal child if the mother does not have the disease while her husband has the disease? A. 0% only B. 0% or 100% C. 0% or 50% D. 50% only E. 100% 3. What is the probability of having a girl child with Marfan Syndrome if both mother and father has the heterozygous genotype for the disease? A. 1/4 B. 1/2 C. 3/4 D. 3/8 E. 1/8 PLEASE ANSWER ALL THE QUESTIONS BECAUSE THEY ARE CONNECTED, THANK YOU!arrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forward
- The expression of maternal-effect genes directly leads to a. the establishment of body axes. b. segmentation. c. determination. d. cell differentiation.arrow_forwardVirtually all steps of embryological development depend on: a. Alterations in the genome b. Tumor Stem Cells c. Changes in programs of gene expression d. Telomerasearrow_forwardOne of the forms of rickets is inherited in the autosomal dominant way. This disease is a result of: Select one: a. Aneuploidy. O b. Changes in the number of chromosomes. c. Chromosomal mutations. e. Gene mutations. O d. Polyploidy.arrow_forward
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