Biology
Biology
10th Edition
ISBN: 9780321794260
Author: Audesirk, Teresa/ Audesirk
Publisher: Pearson College Div
Question
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Chapter 7.3, Problem 1CT
Summary Introduction

To determine:

The publication that described above change asteroid impact hypothesis into a scientific theory that is “set in stone”.

Introduction:

The scientific theory is defined as a well-sustained explanation at some features of natural world. It is based on the fact which is confirmed so many times a series of observations and experiment.

Summary Introduction

To determine:

The cause of K-T extinction ever be proven.

Introduction:

The Cretaceous-Tertiary extinction or K-T event involves die-off of dinosaurs and other animal species. They were died over 65.5 million years ago. The organisms died due to climacteric and other geological changes.

Summary Introduction

To determine:

The scientists believed that evidence pointed to alternative causes for extinction now abandons their hypotheses on this article.

Introduction:

Extinction is defined as the biological process of termination of organisms or group of organisms from a population over a period of time. Extinction occurs due to several different factors such as environmental and geological conditions.

Summary Introduction

To determine:

The debates among scientists weaken or strengthen the role of science in society.

Introduction:

The scientific theory is defined as a well-sustained explanation at some features of natural world. Extinction is defined as the biological process of termination of organisms or group of organisms from a population over a period of time.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…
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