Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Question
Chapter 21.1, Problem 3CC
Summary Introduction
To determine:
The effect of only asexual reproduction of organisms in a population that have stopped the sexual reproduction by referring the concept 10.4.
Introduction:
Asexual reproduction involve production offspring from a single organism, that inherit the genes from one parent only whereas the sexual reproduction involve production of offspring from two individuals of different sexes (male and female), results in recombination of their genetic information in offspring.
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Group and Mutation
Time Taken to Collect Candy
Time Taken to Eat Candy
A Extra long nails
1 minute 3 seconds
8 minutes 12 seconds
B No digits; hands paddle-like
15 seconds
7 minutes 18 seconds
C Normal
22 seconds
2 minutess 44 seconds
D Hands fused in frontof body; no range of motion
Did not collect 15 pieces.Collected 11 pieces
Ate 11 pieces;4 minutes 12 seconds
E Webbing on hands and feet
11 minutes 45 seconds
17 minutes 12 seconds
F No peripheral
3 minutes 2 seconds
2 minutes 52 seconds
G Blind
Did not collect 15 pieces.Collected 4 pieces in 4 minutes
Ate only 4 pieces;1 minute 16 seconds
H Short legs; normal numberof digits on hands and feet
55 seconds
3 minutes 2 seconds
Natural selection involves changes in the genetic makeup of a population over a period of time. The random change of DNA from parent to offspring, called mutations, can help produce variations in offspring. Some mutations can be helpful, while others can be harmful. In this experiment,…
Chapter 21 Solutions
Campbell Biology in Focus
Ch. 21.1 - Explain why genetic variation within a population...Ch. 21.1 - Of all the mutations that occur in a population,...Ch. 21.1 - Prob. 3CCCh. 21.2 - A population has 700 individuals, 85 of genotype...Ch. 21.2 - The frequency of allele a is 0.45 for a population...Ch. 21.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 21.3 - In what sense is natural selection more...Ch. 21.3 - Distinguish genetic drift from gene flow in terms...Ch. 21.3 - WHAT IF? Suppose two plant populations exchange...Ch. 21.4 - What is the relative fitness of a sterile mule?...
Ch. 21.4 - Explain why natural selection is the only...Ch. 21.4 - Consider a population in which heterozygotes at a...Ch. 21 - Natural selection changes allele frequencies...Ch. 21 - Sparrows With average-sized w1ngs survive severe...Ch. 21 - If the nucleotide variability of a locus equals...Ch. 21 - There are 25 individuals in population 1, all with...Ch. 21 - A fruit fly population has a gene with two...Ch. 21 - FOCUS ON EVOLUTION Using at least TWO examples,...Ch. 21 - Prob. 8TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Imagine a population (with individuals of all possible genotypes) whose food supply is sometimes contaminated with a poison that tastes like PTC. Anyone who cannot taste PTC eats the food and dies. The survivors, the PTC tasters, reproduce. Will be there anyone in this new generation that CANNOT taste PTC? Why?arrow_forwardSelect two items that biologists agree are necessary in order to consider an organism “alive.” For each, give an example of a nonliving object that otherwise fits the definition of “alive.”arrow_forwardOne 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_forward
- Rainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male sperm are haploid. In the wild, when the sperm fertilizes an egg, the extra set of chromosomes is eliminated, resulting in a diploid offspring.The process that produces the sperm and egg, and the process the offspring use to grow into adults are, respectively, Select one: a. Process to produce sperm and egg Process used for growth of the offspring Mitosis Cytokinesis b. Process to produce sperm and egg Process used for growth of the offspring Mitosis Meiosis c. Process to produce sperm and egg Process used for growth of the offspring Meiosis Cytokinesis d. Process to produce sperm and egg Process used for growth of the offspring Meiosis Mitosisarrow_forwardWhy does natural selection have little effect on senescence? Genes that cause senescence have no variants because they became fixed early in evolutionary history. Low-calorie diets, which may not affect offspring, cause individuals to go through senescence. Reproduction generally occurs before senescence genes begin to produce harmful effects on fitness. Senescence is a result of getting older and is not controlled by genes that can be inherited.arrow_forwardFrom an evolutionary standpoint, why is sexual reproduction advantageous for the continuation of a species?arrow_forward
- Which of the following would not be considered a component of sexual reproduction? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer a Production of eges and sperm in separate sexes in an animal species b. Gradual acquisition of multiple mutations in a purely mitotically dividing eukaryotic single celled organism Occasional production of diploids through fusions of cells of opposite mating types in a yeast that largely reproduces through clonal mitotic divisions "Alteration of generations" between haploid and diploid organisms in a fernarrow_forwardGeneticsarrow_forwardExplain what epigenetics is? Please explain the role of epigenetics in vernalization.arrow_forward
- Which of the following is the term used to describe asexualreproduction in a single-celled organism?a. cytokinesisb. mitosisc. binary fissiond. All of these are correct.arrow_forwardExplain the advantage that populations of sexually reproducing organisms have over asexually reproducing organisms?arrow_forwardVISUALIZE Label the following diagram and explain what this diagram illustrates.arrow_forward
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