MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305269842
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 41, Problem 3DAA
Summary Introduction
To explain: The type of defect that is more than twice risky to occur in the multiple-births than in single newborns.
Concept introduction: During the gestation period, the mother can have single birth or multiple births. The single birth is where only one fetus is carried during the gestation period in the womb. The 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 the insufficient supply of nutrient to the developing fetus. These fetuses become still-born or born with abnormalities.
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The direction of shell coiling in the snail Lymnaea peregra (discussed in the introduction to this chapter) results from genetic maternal effect. An autosomal allele for a right-handed, or dextral, shell (s+) is dominant over the allele for a left-handed, or sinistral, shell (s). A pet snail called Martha is sinistral and reproduces only as a female (the snails are hermaphroditic). Indicate which of the following statements are true and which are false. Explain your reasoning in each case.
Q. Martha’s mother must have been sinistral.
Chapter 41 Solutions
MindTap Biology, 1 term (6 months) Printed Access Card for Starr/Taggart/Evers/Starr's Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 41 - Sexual reproduction ___ . a. requires formation of...Ch. 41 - The ___ is a genetic dead end. a. polar body b....Ch. 41 - Prob. 3SQCh. 41 - Prob. 4SQCh. 41 - Prob. 5SQCh. 41 - Prob. 6SQCh. 41 - Male germ cells divide by meiosis inside the...Ch. 41 - Prob. 1DAACh. 41 - Prob. 2DAACh. 41 - Prob. 3DAA
Ch. 41 - Prob. 4DAACh. 41 - A male attains an erection when ___ . a. muscles...Ch. 41 - Prob. 9SQCh. 41 - Prob. 10SQCh. 41 - Prob. 11SQCh. 41 - Match each disease with the type of organism that...Ch. 41 - Prob. 13SQCh. 41 - Match each hormone with its source. ____ FSH and...Ch. 41 - Prob. 1CTCh. 41 - Fraternal twins are nonidentical siblings that...Ch. 41 - Some sperm mitochondria enter an egg during...
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