MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Chapter 19, Problem 2TY
Summary Introduction
Introduction:
Gametes are haploid cells involved in sexual reproduction. They are formed by the process of cell division or meiosis. A gamete from the father and another gamete from the mother, fuse to form a zygote.
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How are individuals II-1 and II- 2 related?
A.They are siblings
B.They are married
C.They are cousins
D.They are not related
A.) In which parent did nondisjunction take place?
B.) How many Chromosomes would be in zygote 1, 2, and 3?
C.) Which zygote, if any, would be most likely to be healthy? Explain.
D.) Name the conditions the non-healthy zygotes have.
How does the sexual life cycle increase the genetic variation in a species?
a. by providing gametes with different combinations of parental chromosomes.
b. by allowing the combination of chromosomes from two different individuals.
c. by allowing recombination of the alleles on a chromosome.
d. A and B only.
e. A, B, and C.
Explain your answer.
Chapter 19 Solutions
MasteringBiology With eText - Access
Ch. 19 - If you might be a carrier of a gene for an...Ch. 19 - Prob. 2QCCh. 19 - Prob. 1CRCh. 19 - Prob. 2CRCh. 19 -
3. Distinguish between genotype and phenotype.
Ch. 19 - Describe the contributions of Mendel to the field...Ch. 19 - Explain how alterations of chromosome number and...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Describe what is meant by sex-linked inheritance.
Ch. 19 -
9. Explain why lethal diseases caused by dominant...Ch. 19 - Prob. 10CRCh. 19 - All of the following statements about homologous...Ch. 19 - Prob. 2TYCh. 19 -
3. Which of the following statements correctly...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Which of the following results in the separation...Ch. 19 - Prob. 9TYCh. 19 - Prob. 10TYCh. 19 - What tool is used to determine the probabilities...Ch. 19 - Prob. 12TYCh. 19 - What is the basis for the tremendous genetic...Ch. 19 - Prob. 14TYCh. 19 -
15. Which of the following events or processes...Ch. 19 -
1. What fraction of the offspring of two...Ch. 19 -
2. Why is it that the range of resting blood...Ch. 19 - Prob. 3AWKCh. 19 - Geneticists often study patterns of gene transfer...Ch. 19 - Prob. 5AWKCh. 19 - Prob. 6AWKCh. 19 - Nondisjunction during meiosis can lead to the...
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- Assuming that independent assortment occurs during meiosis, what type(s) of gametes will form in individuals with the following genotypes? a. AABB b. AaBB c. Aabb d. AaBbarrow_forwardExplain why the relative location of two genes on a chromosomecan affect the way their alleles are distributed into gametes.arrow_forwardwhich of these could lead to the mistake evident in the karyotype? A) a failure of cytokinesis after meiosis I in gamete formation B) a nondisjunction in meiosis II in gamete formation C) crossing over in meiosis ! in gamete formation D) fertilizaton by two sperm in zygote formationarrow_forward
- A. How many gamete classes would be formed from the following genotype: Tt Rr Ss Gg Yy? B. Deduce a simple formula for predicting the classes of gametes formed for heterozygous, diploid organisms, that can take into account number of genes being considered. Tt; TtRr; AaTtRr.arrow_forwardA) Hoe many cells are produced by the end of meiosis II? B) Are the cells produced at the end of meiosis II haploid or diploid? C) Are the chromosomes of the four final meiotic products replicated or nonreplicated?arrow_forwardWhat is the main difference between autopolyploid and allopolyploid? a. the number of chromosomes b. the functionality of the chromosomes c. the source of the extra chromosomes d. the number of mutations in the extra chromosomesarrow_forward
- Recombination frequency shows? A. Shows the likelihood of gametes being carried over during crossover. B. Shows the likelihood of traits being carried over during crossover. C. Shows the likelihood of genes being carried over during meiosis. D. Shows the likelihood of traits being carried over during mitosisarrow_forwardUse the pedigree to answer the question. How is this trait inherited? A. The trait is epistatic. B. The trait is X-linked. C. The trait is dominant. D. The trait is recessive.arrow_forwarda. If a couple had more than one child, would all the children have the same bands as the first one? b. Which event in meiosis might explain your answer?arrow_forward
- How many kinds of gametes will be expected from an individual with the genotype ppccTTRr? 6 2 8 16 4arrow_forwardCompare an autotetraploid and an allotetraploid to each other with respect to the characteristics listed below. Answer auto, allo, both or neither for each statement. a) Balanced and unbalanced gametes can form.b) Contains 4 homologous copies of every chromosome.c) Originated from 2 different ancestral diploid species.d) Fully fertile.arrow_forwardState the law of segregation. How does the law relate to meiosis?arrow_forward
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