Ch.22 - DevelopmentSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology

Animal Development

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Developmental Biology
Animal Development
Plant Development
Additional Problems
Which of these regions is most likely to develop into the Drosophilia's head?A. AB. BC. CD. DE. E
Disruption of the gradient of an inducer (i.e., an inductive signal) during an animal's development would NOT be expected to result ina. altered pattern formation.b. altered development along one of the body axes.c. increased numbers of mutation in the animal's DNA.d. abnormal gene regulation in some of the animal's cells.e. missing body parts.
The following quote is describing a yellow-pigmented region of the egg of marine invertebrate. “An orange or yellow colored cytoplasm, initially uniformly distributed in egg, becomes localized to a crescent when the cortex rearranges right after fertilization. Cells that obtain the pigmented material become muscle, as indicated by the fate map of this embryo.” Which of the following best describes the content of this area?a. cytoplasmic determinant b. Hox gene c. Hormone d. endoderm e. blastopore
If an important cytoplasmic determinant were missing from an animal zygote, what would you expect to happen as the zygote developed into a multicellular organism?a. The animal would lack certain amino acids.b. The animal would lack ribosomes.c. DNA polymerase would be unable to replicate the animal's genome.d. The animal would develop normally. e. One of the animal's major body axes would fail to develop normally.
Identical twins result from a single fertilization to form a zygote, which then clones itself.a. Trueb. False
Fraternal (nonidentical) twins result from two simultaneous fertilizations, which form two separate zygotes. a. Trueb. False
The process that merges the gametes from two parents is: a. Fertilizationb. Meiosisc. Mitosisd. Conjugation
A zygote is: a. A haploid cellb. A gametec. A product of meiosisd. All are correcte. A diploid cell
During the formation of an embryo, a hollow sphere of cells with a fluid-filled cavity inside is termed a _____.A. blastulaB. gastrulaC. morulaD. blastocoelE. neurula
The human blastocystA. has three germ layers.B. contains a fluid-filled central cavity.C. is the expanded end of the gastrula.D. is the fertilized egg.E. gives rise to umbilical blood vessels.