Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 16, Problem 5TYU
Summary Introduction
Introduction: DNA is the blueprint of life, which consists of genetic instructions in a cell. Any variations in the DNA may lead to genetic disorders or inherited diseases, as they are passed onto the next generation.
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Two normal-looking fruit flies were
crossed and, in their progeny, there
were 202 females and 98 males. (i)
What is unusual about this result?
(ii) Provide a genetic explanation for
this anomaly. (iii) Provide a test of
your hypothesis.
E
0 Listen
Match the image to the stage. Black is paternal, white is maternal
...
<
-19 Listen
Meiosis 1
Meiosis 2
Mitosis
G2
Sisters separate
Spindle forms
1.
Crossing Over Occurs
2.
Chromosomes become less distinct, nuclear envelope reforms.
Chromosomes Duplicate
3.
First Cell Division Occurs
lolH
HH
A single line of chromosomes appears in the middle of the cell
11
F
Put the following in order in mitosis and the preceding interphase
Hint: Determine whether the event occurs in G1, S, G2, prophase,
metaphase, anaphase, telophase or cytokinesis first. Also draw the
stages out.
d
b
B
d
F
d
b
Put the following steps in order during meiosis and the previous
interphase. Hint: Determine which step (interphase, Meiosis 1 and
Meiosis 2) they occur in and then which phase (prophase, metaphase,
anaphase, telophase, cytokinesis). Also draw the stages out.
B
d
Mendelian factor (Aa) is segregated during
(a) Anaphase I
(b) Anaphase II
(c) Diplotene
(d) Zygotene/Pachytene
Chapter 16 Solutions
Biology (MindTap Course List)
Ch. 16.1 - Distinguish between karyotyping and pedigree...Ch. 16.1 - Prob. 2LOCh. 16.1 - Prob. 3LOCh. 16.1 - Prob. 1CCh. 16.1 - Prob. 2CCh. 16.1 - Describe two ways in which genome database...Ch. 16.1 - Prob. 4CCh. 16.2 - Explain how nondisjunction in meiosis is...Ch. 16.2 - Distinguish among the following structural...Ch. 16.2 - Prob. 6LO
Ch. 16.2 - VISUALIZE Draw a simple sketch illustrating how...Ch. 16.2 - Prob. 2CCh. 16.2 - Prob. 3CCh. 16.2 - Prob. 4CCh. 16.3 - State whether each of the following genetic...Ch. 16.3 - Which of the following genetic diseases is/are...Ch. 16.3 - Prob. 2CCh. 16.3 - Prob. 3CCh. 16.4 - Briefly discuss the process of gene therapy,...Ch. 16.4 - Prob. 1CCh. 16.5 - State the relative advantages and disadvantages of...Ch. 16.5 - Distinguish between genetic screening programs for...Ch. 16.5 - Prob. 1CCh. 16.5 - Prob. 2CCh. 16.6 - Prob. 11LOCh. 16.6 - Prob. 1CCh. 16.6 - CONNECT To be expressed, an autosomal recessive...Ch. 16.6 - Prob. 3CCh. 16 - Prob. 1TYUCh. 16 - An abnormality in which there is one more or one...Ch. 16 - The failure of chromosomes to separate normally...Ch. 16 - Prob. 4TYUCh. 16 - Prob. 5TYUCh. 16 - Prob. 6TYUCh. 16 - Prob. 7TYUCh. 16 - Prob. 8TYUCh. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Prob. 11TYUCh. 16 - SCIENCE, TECHNOLOGY, AND SOCIETY Imagine that you...Ch. 16 - A common belief about human genetics is that an...Ch. 16 - Prob. 14TYUCh. 16 - EVOLUTION LINK Explain some of the evolutionary...
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- Homologous chromosomes a) are formed when the chromosomes separated during anaphase b) are matching set of chromosomes that a cell receives from both parents c) carry the same alleles in the same sequence d) are a set of identical alleles that a cell receives from both parentsarrow_forwardWhat is happening during this phase of meiosis? A.)Mitosis is complete and 4 diploid daughter cells have been produced. B.)Telophase II C.)Meiosis II is complete and 4 haploid daughter cells have been produced. D.)Meiosis I is complete and 4 diploid daughter cells have been produced E.)Meiosis II is complete and 4 diploid daughter cells have been producedarrow_forwardAn error occurred during meiotic cell division, and a human egg has an extra copy of chromosome 21. That egg was fertilized by a normal sperm to create an embryo. This would lead to an individual A) who was tetraploid B) who would be normal in chromosomal number C) who had trisomy D) who was triploidarrow_forward
- (a) what is happening in METAPHASE II? Include Crossing Over and Independent Assortment when they occur. (b) what is happening in ANAPHASE II? Include Crossing Over and Independent Assortment when they occur. (c) what is happening in TELOPHASE II? Include Crossing Over and Independent Assortment when they occur.arrow_forwardThe mouse haploid genome contains about 2.9 × 109 nucleotide pairs of DNA. Indicate how many nucleotide pairs of DNA are present in each of the following mouse cells: (a) somatic cell, (b) sperm cell, (c) fertilized egg,(d) primary oocyte, (e) first polar body, (f) secondary spermatocyte.arrow_forwardWhich of the four daughter cells shown at right would produce an offspring with trisomy 3 after it is fertilized? A.) A B.) B C.) C D.) Darrow_forward
- Which sentence does not describe a way in which genetic variation increases during meiosis? A) Random segregation of homologous chromosomes during metaphase/anaphase I. B) Random mutation of the genetic code during DNA replication. C) Random segregation of chromatids during metaphase/anaphase II. D) Crossing-over of homologous chromosomes, to exchange parts of their arms. 2. Choose the correct word to describe the physical, biochemical and behavioural characteristics of an individual, caused by how their genes interact with the environment? A) Morphology B) Genotype C) Physiology D) Phenotype 3. 0000 A) 25 % B) 50% C) 75 % D) 100 % 0000 Two individuals who are heterozygous for gene Y have a child. What is the probability that their child will be heterozygous for the gene? 0000arrow_forwardNo need to explain 1.) The phenomenon in which gene present on the same chromosome remain together as gametes are produced is knows as A.) non-disjunction B.) cross-over C.) synapsis D.) linkage 2.) Queen Victoria was a carrier of hemophilia, but there is no record of the disease in any of her ancestors. It is reasonable to suggest that she became a carrier of hemophilia as a result of A.) recombination B.) a mutation C.) inbreeding D.) crossing over 3.) How many primary spermatocytes and primary Oo Yates are required to produced 100 sperm and 100 eggs? A.) 25 primary spermatocytes and 25 primary oocytes B.) 100 primary spermatocytes and 100 primary oocytes C.) 25 primary spermatocytes and 100 primary oocytes D.) 100 primary spermatocytes and 25 primary oocytesarrow_forwardThe most notable differences between gamete formation in most animals and gamete formation in plants is that ______________. a) plants produce gametes in somatic tissue, whereas animals produce gametes in germ tissue b) plants produce gametes by mitosis, whereas animals produce gametes by meiosis c) plants produce only one of each gamete, but animals produce many gametes d) plants produce gametes that are diploid, but animals produce gametes that are haploidarrow_forward
- If two genes are located on different chromosome types then (a) the mother’s genotype will determine the phenotype of the son (b) the genes will not be inherited independently (c) parents that are heterozygous for both genes will produce children displaying a 9:3:3:1 ratio (d) one gene will mask or hide the effect of the other (e) none of the abovearrow_forwardYou are an allele on a single uncondensed chromosome in a Yellow fever-carrying mosquito (Aedes aegypti) diploid cell (2n = 6). Demonstrate in as much detail as possible: (1) how you will get to each genetically identical diploid cell of the multicellular offspring. (2) how you will get to the next generation of sexually reproduced progeny.arrow_forwardWhen do homologous chromosomes pair? Select all that apply. A.) During meiosis I B.) During meiosis II C.) During mitosis D.) During interphase before meiosis E.) During interphase between meiosis I and meiosis IIarrow_forward
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