Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 61, Problem 1PL
The ovum and sperm unite and form a diploid cell called the
a. pronucleus.
b. blastocyst.
c. morula.
d. zygote.
Expert Solution & Answer
Summary Introduction
Introduction:
Sperm is a male sex cell develop in testis during spermiogenesis where ovum is female sex cell produced in the ovary. Diploid cell means a cell containing two sets of chromosomes where haploid contain a half number of chromosomes.
Answer to Problem 1PL
Correct answer:
The correct answer is an option (d) The ovum and sperm unite and form a diploid cell called the zygote.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) The ovum and sperm unite and form a diploid cell called the zygote. when sperm fertilized with female gamete i.e. ovum it becomes a zygote. Sperm and ovum are haploid cells when it fuses together it becomes a diploid cell. So, the correct answer is an option (d).
Explanation for incorrect answer:
Option (a) The ovum and sperm unite and form a diploid cell called the pronucleus. Pronucleus is actually sperm or nucleus before fertilization. So, this is an incorrect option.
Option (b) The ovum and sperm unite and form a diploid cell called the blastocyst. The blastocyst is the early development of an organism. So, this is an incorrect answer.
Option (c) The ovum and sperm unite and form a diploid cell called a morula. This option is incorrect because it is an earlier stage of the embryo. So this option is incorrect.
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Chapter 61 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 61 - The ovum and sperm unite and form a diploid cell...Ch. 61 - The ________ is the development stage that...Ch. 61 - Which of the following is not an extraembryonic...Ch. 61 - The placenta is comprised of a. only the...Ch. 61 - The embryonic stage of human development exists a....Ch. 61 - The zonapellucida gel layer surrounds the...Ch. 61 - A single completed oogenesis sequence produces...Ch. 61 - A single completed spermatogenesis sequence...Ch. 61 - Human gametes Contain ______________ chromosomes.Ch. 61 - The diploid number of human chromosomes found in...
Ch. 61 - To create genetic variation, ______________...Ch. 61 - To create genetic variation, ______________...Ch. 61 - The cell resulting from fertilization is called...Ch. 61 - Tiny cells that form during meiotic divisions of...Ch. 61 - Fertilization and early embryonic development...Ch. 61 - A solid ball of about sixteen cells is called a...Ch. 61 - The part of meiosis that is most similar to...Ch. 61 - Meiosis I reduces the chromosome number in half,...Ch. 61 - Implantation of the ____________ into the...Ch. 61 - The two-cell, four-cell, eight-cell, and morula...Ch. 61 - Match the terms in column A with the descriptions...Ch. 61 - Summarize your observations of any similarities...
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