Biology: The Unity and Diversity of Life
Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 42, Problem 2DAA
Summary Introduction

To explain: Heart defects are the most common type of birth defect in the single-birth group and is more or less common in the multiple birth group.

Concept introduction: During the gestation period, the mother can have single birth or multiple births. Single birth is where only one fetus is carried during the gestation period in the womb. Multiple births are where more than one fetus is carried during the gestation period such as twins, triplets, quadruplets, and more. Carrying more than one fetus in the womb results in insufficient supply of nutrient to the developing fetus. These fetuses become still-born or born with abnormalities

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