Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 42.1, Problem 3CYL
Summary Introduction
To describe:
The internal and external fertilization and provide examples of animals that use each of these methods of fertilization.
Introduction:
Fertilization is the process of fusion of the sex cells or gametes which are derived from the separate male and female individual of the same species. The sex cells of the male are called the sperm and the sex cells of the females are called the eggs. The sperm and egg cell are haploid in nature. The union of the sperm and eggs produces a diploid cell called a zygote.
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Chapter 42 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 42.1 - Prob. 1TCCh. 42.1 - Prob. 2TCCh. 42.1 - Prob. 1CSCCh. 42.1 - Prob. 1CYLCh. 42.1 - Prob. 2CYLCh. 42.1 - Prob. 3CYLCh. 42.2 - Mammalian sperm dont live very long after...Ch. 42.2 - Prob. 1TCCh. 42.2 - Prob. 1HYEWCh. 42.2 - describe the human male and female reproductive...
Ch. 42.2 - explain how hormonal interactons control...Ch. 42.2 - describe spermatogenesis and oogenesis, the...Ch. 42.3 - In 2017, scientists used CRISPR Cas9 DNA editing...Ch. 42.3 - describe the principal methods of contraception,...Ch. 42.3 - Prob. 2CTCh. 42 - In humans, sperm are produced in the a....Ch. 42 - In humans, fertilization usually occurs in the a....Ch. 42 - Prob. 3MCCh. 42 - Prob. 4MCCh. 42 - Prob. 5MCCh. 42 - Reproduction by a single animal, without the need...Ch. 42 - In mammals, the male gonad is called...Ch. 42 - Prob. 3FIBCh. 42 - Prob. 4FIBCh. 42 - Prob. 5FIBCh. 42 - Oocytes develop in a multicellular structure, the...Ch. 42 - Describe the advantages and disadvantages of...Ch. 42 - Compare the structures of the egg and sperm. What...Ch. 42 - Prob. 3RQCh. 42 - List the structures, in order, through which a...Ch. 42 - Name the three accessory glands of the male...Ch. 42 - Prob. 6RQCh. 42 - Prob. 1AC
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- What happens in the process of fertilization in animals and humans?arrow_forwardExplain the advantages and disadvantages of self fertilization in these flatwormsarrow_forwardWhat are the advantages and disadvantages of internal fertilization over external fertilization? How about the advantages and disadvantages of external fertilization over internal fertilization? Enumerate.arrow_forward
- Aquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without fertilisation. (b) oviparous with external fertilisation. (c) viviparous with internal fertilisation. (d) oviparous with internal fertilisation.arrow_forwardIn the list of animals given below, hen is the odd one out.Human being, cow, dog, henThe reason for this is: (a) it undergoes internal fertilisation. (b) it is oviparous. (c) it is viviparous. (d) it undergoes external fertilisation.arrow_forwardDescribe development of an animal from zygote to infant.arrow_forward
- Describe internal fertilization process in sea urchin.arrow_forwardWrite in detail the process of organogenesis in vertebrates. Give one example and make diagram also.arrow_forwardFertilization: a) Briefly describe the process of fertilization in humans, b) identifying key aspects that stop sperms from different species to fertilize human oocytes, and c) identifying also key aspects that prevent polyspermy.arrow_forward
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