Homework Answers
Random fertilization, crossing over and independent assortment of chromosomes in meiosis are responsible for genetic variation in sexually reproducing organisms.
Random fertilization is the process by which a random sperm fertilizes an egg, leading to the production of a zygote.
Crossing over takes place once the homologous chromosomes are paired up. Crossing over involves the exchange of genetic information between nonsister chromatids of homologous chromosomes.
Independent assortment of chromosomes occurs during metaphase 1 of meiosis and is responsible for the unique arrangment of chromosomes.
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Which processes lead to most genetic variation in sexually reproducing organisms? Select all that apply. random...
Which if the following is not a source of genetic variation in meiosis? O polar body...
Which if the following is not a source of genetic variation in meiosis? O polar body formation O law of independent assortment o the random lining up of chromosomes on the metaphase plate crossing over O tetrad formation
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more:...
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more: a. Crossing over occurs. b. The reproduction of cells through binary fission resulting in two different daughter cells. c. Independent assortment of homologous chromosomes during meiosis. d. Alleles are inherited from two parents instead of one. e. The pairing of sister chromatids. Which of the following images shows crossing over? Select one: Consider a gene with two alleles that show complete dominance. When two...
Random assortment of chromosomes is one of the processes by which genetic variation is generated. Explain...
Random assortment of chromosomes is one of the processes by which genetic variation is generated. Explain what the process means and how new variation is produced as a consequence of random assortment.
Why must all sexually reproducing organisms have both mitosis and meiosis in their life cycles? In other words, what is...
Why must all sexually reproducing organisms have both mitosis and meiosis in their life cycles? In other words, what is the purpose of meiosis AND what is the purpose of mitosis and how are they different? Without sexual reproduction evolution would be extremely slow. Why ? And what stage and steps in meiosis are so important to the genetic variation within a species?
Processes that determine heredity and contribute to genetic variation Meiosis guarantees that in a sexual life...
Processes that determine heredity and contribute to genetic variation Meiosis guarantees that in a sexual life cycle, offspring will inherit one complete set of chromosomes (and their associated genes and traits) from each parent. The transmission of traits from parents to offspring is called heredity. Another important aspect of meiosis and the sexual life cycle is the role these processes play in contributing to genetic variation. Although offspring always resemble their parents, they are genetically different from both of their...
QUESTION Which of the following statements regarding geniet diversity is false? Genetic diversity is enhanced by...
QUESTION Which of the following statements regarding geniet diversity is false? Genetic diversity is enhanced by random fertilization Genetic diversity is enhanced by Independent orientation of chromosomes at me Genetic diversity is enhanced by mitosis Genetic diversity is enhanced by crossing over during meless QUESTION 7 Which of the following statements regarding the differences between mitosis and melosis is false? In melosis four daughter cells are produced, whereas in mitosis two daughter cells are produced. Cells produced by mitosis are...
Which of the following is the result of meiosis? (Select all that apply) A The production...
Which of the following is the result of meiosis? (Select all that apply) A The production of four genetically identical daughter cells B. The production of four genetically different daughter cels C. No change in chromosome number from the parent cel D. A doubling of the chromosome number E. A reduction in the chromosome number by haif 13. Mitosis and cytokinesis function in which of the following? (Select all that apply) A. Asexual reproduction in unicellular eukaryotic organisms B. Gamete...
What is/are the most important factor(s) generating genetic diversity among individuals in a population of eukaryotes?...
What is/are the most important factor(s) generating genetic diversity among individuals in a population of eukaryotes? a) mutation O b) independent assortment O c) genetic recombination d) b and conly e) all of the above are important in generating diversity in eukaryotes Question 8 1 pts Which of the following statements about genetic recombination is FALSE? O genetic recombination acts independently of independent assortment O genetic recombination occurs during the production of sperm O genetic recombination is important to the...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg in Telophase 2 and zygote formation after Cytokinesis 2 Question 3 1 pts Pg 99. Why is it essential that each gamete receive only one set of chromosomes, in other words. why must gametes be haploid? Because a haploid gamete can then fuse with a diploid egg or diploid sperm which promotes fertilization and development of a zygote. Because when gametes fuse in fertilization,...
all these questions have more than one correct answers 1) Meiosis & mitosis have similarities as...
all these questions have more than one correct answers 1) Meiosis & mitosis have similarities as well as differences. Which of the following represent similarities? a) Both increases genetic variation b) Both change in chromosomes number in daughter cells c) Both only occur in eukaryotes D) DNA replication must occur prior to both e) Both make use of a spindle to separate chromatids 2) Meiosis is a special form of cell division. Select any of the following that applies to...
Which if the following is not a source of genetic variation in meiosis? O polar body formation O law of independent assortment o the random lining up of chromosomes on the metaphase plate crossing over O tetrad formation
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more: a. Crossing over occurs. b. The reproduction of cells through binary fission resulting in two different daughter cells. c. Independent assortment of homologous chromosomes during meiosis. d. Alleles are inherited from two parents instead of one. e. The pairing of sister chromatids. Which of the following images shows crossing over? Select one: Consider a gene with two alleles that show complete dominance. When two...
Processes that determine heredity and contribute to genetic variation Meiosis guarantees that in a sexual life cycle, offspring will inherit one complete set of chromosomes (and their associated genes and traits) from each parent. The transmission of traits from parents to offspring is called heredity. Another important aspect of meiosis and the sexual life cycle is the role these processes play in contributing to genetic variation. Although offspring always resemble their parents, they are genetically different from both of their...
QUESTION Which of the following statements regarding geniet diversity is false? Genetic diversity is enhanced by random fertilization Genetic diversity is enhanced by Independent orientation of chromosomes at me Genetic diversity is enhanced by mitosis Genetic diversity is enhanced by crossing over during meless QUESTION 7 Which of the following statements regarding the differences between mitosis and melosis is false? In melosis four daughter cells are produced, whereas in mitosis two daughter cells are produced. Cells produced by mitosis are...
Which of the following is the result of meiosis? (Select all that apply) A The production of four genetically identical daughter cells B. The production of four genetically different daughter cels C. No change in chromosome number from the parent cel D. A doubling of the chromosome number E. A reduction in the chromosome number by haif 13. Mitosis and cytokinesis function in which of the following? (Select all that apply) A. Asexual reproduction in unicellular eukaryotic organisms B. Gamete...
What is/are the most important factor(s) generating genetic diversity among individuals in a population of eukaryotes? a) mutation O b) independent assortment O c) genetic recombination d) b and conly e) all of the above are important in generating diversity in eukaryotes Question 8 1 pts Which of the following statements about genetic recombination is FALSE? O genetic recombination acts independently of independent assortment O genetic recombination occurs during the production of sperm O genetic recombination is important to the...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg in Telophase 2 and zygote formation after Cytokinesis 2 Question 3 1 pts Pg 99. Why is it essential that each gamete receive only one set of chromosomes, in other words. why must gametes be haploid? Because a haploid gamete can then fuse with a diploid egg or diploid sperm which promotes fertilization and development of a zygote. Because when gametes fuse in fertilization,...
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