BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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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 parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place:
A.
the parent cell must divide its DNA in half so each daughter cell gets only the genes needed to carry out its functions. In this way, differentiation occurs.
B.
the parent cell must reproduce its DNA during telophase
C.
the parent cell must first be fertilized
D.
the parent cell must replicate its entire genome prior to mitosis
E.
crossover must be delayed until the second cell division
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
Chapter 18 Solutions
BIOLOGY-TEXT
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_forwardWhich of the following situations does not describes a chromosomal mutation? Select one: a. A cytosine nucleotide is substituted for thymine nucleotide in a gene. b. A portion of Chromosome 4 is deleted during interphase of meiosis. c. The sister chromatids of Chromosome 18 do not separate during anaphase II. d. A section of Chromosome 17 is duplicated leading to problems in the peripheral nervous system.arrow_forwardWhy are dominant mutations in proto-oncogenes generally not inherited? A. Inherited mutations in proto-oncogenes would not affect cell division rate B. Inherited mutations in proto-oncogenes would decrease cell division rate and no viable embryo would form C. Inherited mutations in proto-oncogenes would increase cell division rate and no viable embryo would form D. Dominant mutations in proto-oncogenes are always inheritedarrow_forward
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- Virtually 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_forwardWhich of the following statements is true regarding cell cycle regulators? a. Cyclins determine which proteins each Cdks will act on. b. Cdks check the DNA for damage and repairs it. c. Cyclin binding to Cdks will result to Cdk inactivation. d. Cyclin levels remain constant through the cell cycle.arrow_forwardChromosomal translocations: Select one: a. Are DNA mutations associated with CML b. Are normal processes involved in cell signaling C. Are associated with retinoblastoma d. Are DNA mutations associated with p53arrow_forward
- One day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image below: 1. When the female butterfly’s eggs are fertilized, the fusion (2N) nucleus will divide repeatedly giving rise to cleavage nuclei, which: a. can become trophocytes that migrate into the germarium and connect to the developing embryo by nutritive cords. b. can migrate to the periplasm and become cleavage cells that ultimately give rise to the germ band and the serosa. c. can migrate to the peripheral cytoplasm and become germ cells, which eventually move into the forming gonads and become oogonia or spermatogonia. d. can remain in the yolk and become vitellophages that digest the yolk and make nutrients available to the forming embryo. e. only b and c f. only a and d g. all except a h. all except d 2. In the mature, unfertilized egg of the adult female butterfly: a. bicoid mRNAs will congregate at the end of the…arrow_forwardWhich of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.arrow_forwardThe human X and Y chromosomes a. are about the same size and have approximately the same number of genes b. include genes that determine an individual's sex c. are almost entirely homologous, despite their different names d. are both present in every somatic cell of males and females alikearrow_forward
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