Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
expand_more
expand_more
format_list_bulleted
Question
Chapter 42, Problem 3SQ
Summary Introduction
Introduction: The process where the zygote undergoes several changes to form a youngling is called as development. During the development, the regulated gene expression takes place. As a result, morphogens are produced, which regulate how the organism should develop into a youngling.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Early pregnancy tests used antibodies to detect the presence of human chorionic gonadotropin (hCG) in maternal urine. Explain how hCG, produced by the chorion, gets in maternal urine.
According to the video “The Biology of Skin Color”, how does folate deficiency affect fetal development?
A. It can cause birth defects
B. It helps the fetus to develop faster
C. It does not affect fetal development
D. It increases the health of the fetus
Virtually all steps of embryological development depend on:
a. Alterations in the genome
b. Tumor Stem Cells
c. Changes in programs of gene expression
d. Telomerase
Chapter 42 Solutions
Biology: The Unity and Diversity of Life
Ch. 42 - Prob. 1DAACh. 42 - Prob. 2DAACh. 42 - Prob. 3DAACh. 42 - Prob. 4DAACh. 42 - The end product of cleavage is a __________. a....Ch. 42 - The outermost germ layer in a vertebrate gastrula...Ch. 42 - Prob. 3SQCh. 42 - Prob. 4SQCh. 42 - In humans, fertilization typically occurs in the...Ch. 42 - The ________, a fluid-filled sac, surrounds and...
Ch. 42 - The placenta consists of __________. a. embryonic...Ch. 42 - During the fetal period, ____________. a....Ch. 42 - Prob. 9SQCh. 42 - Match each hormone with its action(s). ______...Ch. 42 - Prob. 11SQCh. 42 - Prob. 12SQCh. 42 - Prob. 13SQCh. 42 - Prob. 14SQCh. 42 - Place these events in human development in the...Ch. 42 - The rubella virus causes German measles. If a...Ch. 42 - A nursing mother who has an alcoholic drink...Ch. 42 - To determine the effect of the bicoid gene,...Ch. 42 - If an embryo splits at the two-cell stage, each of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Blood islands first form in the embryonic:- a. spleen. d. liver. b. yolk sac. e. red bone marrow. c. placentaarrow_forwardThe expression of maternal-effect genes directly leads to a. the establishment of body axes. b. segmentation. c. determination. d. cell differentiation.arrow_forwardA preembryo has:- a. A neural tube. b. A heart bulge. c. A cytotrophoblast. d. A coelom. e. decidual cellsarrow_forward
- Into which structures do the trophoblast cells of the developing embryo, differentiate? a) The developing foetus b) The yolk sac c) The placenta d) The blood vessels e) All of the abovearrow_forwardIn females, meiosis is not completed (a) until birth. (b) until puberty. (c) until fertilization occurs. (d) until ovulation occurs.arrow_forwardAt what stage uteroplacental circulation started? a.Maternal blood entering the lacunar b.Embryo completely embedded c.Formation of extraembryonic mesoderm d.Formation of lacunararrow_forward
- Which of the following situations is the result of epistasis? a A mouse has black fur, black eyes, and black skin. b A mouse has white fur, pink eyes, and pink skin. c A mouse has white fur with black spots and black eyes. d A mouse has black fur with white spots and black eyes.arrow_forwardFill in the blank: A human offspring is called a(an) ___________________ until the end of the eighth week of development.arrow_forwardFor the first 8 weeks of gestation, a conceptus is nourished mainly by a. The placenta. b. Amniotic fluid. c. Colostrum. d. Decidual cells. e. Yolk cytoplasmarrow_forward
- The chromosomal theory of inheritance states thata. chromosomes contain DNA.b. humans have 23 pairs of chromosomes.c. all cells have genes.d. genes are on chromosomes.arrow_forwardDuring cleavage, the mass of cells: a. increases b. decreases c. doubles with every cell division d. does not change significantlyarrow_forwardGametogenesis requires the conclusion of meiosis II. When does this occur in females? a. During fetal development b. At the onset of puberty c. After fertilization d. After implantationarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY