Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 7, Problem 4QP
A Survey of Human Development from Fertilization to Birth
4. The gestation of a fetus occurs over 9 months and is divided into three trimesters. Describe the major events that occur in each trimester. Is there a point at which the fetus becomes more “human”?
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Trophoblast or ICM? If cells choose to become trophoblast, they will end up in the placenta. If they choose to become ICM, they will give rise to the 3 germ layers that will make up the rest of the body of the embryo.
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What will guide them to make the right decision?
Do they have a choice?
The approximately nine month. Between fertilization and birth or transforms a single cell into a complete human being. Test your knowledge of the events that occur in each stage by highlighting the events of the pre-embryonic stage and pink the events of the embryonic stage and blue and the events of the fetal stage in yellow.
Problem:Fetal development takes place in a relatively short amount of time. In just nine months, a functioning human being develops from a zygote formed from the joining of an egg and a sperm. During that time, the fetus receives from its mother through the placenta and umbilical cord everything that it needs to grow and develop into a baby.
Form a Hypothesis: Develop an explanation for how a woman’s lifestyle choices affect the substances that enter the fetus. (In paragraph form)
Chapter 7 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 7.6 - Prob. 1EGCh. 7.6 - Prob. 2EGCh. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - Prob. 1QPCh. 7 - The Human Reproductive System Discuss and compare...Ch. 7 - Prob. 3QPCh. 7 - A Survey of Human Development from Fertilization...Ch. 7 - Prob. 5QPCh. 7 - Prob. 6QP
Ch. 7 - Prob. 7QPCh. 7 - How Is Sex Determined? The absence of a Y...Ch. 7 - Prob. 9QPCh. 7 - Mutations Can Uncouple Chromosomal Sex from...Ch. 7 - Prob. 11QPCh. 7 - Mutations Can Uncouple chromosomal Sex from...Ch. 7 - Prob. 13QPCh. 7 - Sex-Influenced and Sex-Limited Traits What method...Ch. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...
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- Major organs begin to develop during which part of human gestation? fertilization first trimester second trimester third trimesterarrow_forwardThe ________, a fluid-filled sac, surrounds and protects a human embryo and keeps it from drying out. a. amnion b. yolk sac c. allantois d. chorionarrow_forwardThe placenta is formed from ________. the embryos mesenchymal cells the mothers endometrium only the mothers endometrium and the embryos chorionic membrane the mothers endometrium and the embryos umbilical cordarrow_forward
- The olfactory pits form from which of the following? mesoderm cartilage ectoderm endodermarrow_forwardDuring the fetal period, ____________. a. gastrulation ends b. somites form c. a tail forms d. limb movements beginarrow_forwardPuberty in girls- What principal signs of puberty, 3 stages- Why is age of menarche loweringarrow_forward
- The placenta is formed from ________.a. the embryo’s mesenchymal cellsb. the mother’s endometrium onlyc. the mother’s endometrium and the embryo’schorionic membraned. the mother’s endometrium and the embryo’sumbilical cordarrow_forwardThe bladder like structure in the amniotic eggarrow_forwardWhich of the following structure develops into only the fetus? A. Blastocyte B. Zygote C. Trophoblast D. Inner cell massarrow_forward
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