FREE AND STUDY GAMES ABOUT CH.29 DEVELOPMENT

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EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -120 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: the penetration of a secondary oocyte by a single sperm cell

Answer:

syngamy

Question 2: shedding of the __ __ is necessary for implantation to occur

Answer:

zona pellucida

Question 3: fluid filled sphere of cells that enters teh uterine cavity

Answer:

blastocyst

Question 4: develops into the epidermis of skin and the nervous system

Answer:

ectoderm

Question 5: the outer covering of cells of the blastocyst

Answer:

trophoblast

Question 6: traits linked to the X chromosome

Answer:

sex-linked inheritance Question 7: __ twins are produced by fertilization of 1 ovum that separates into 2 embryos, usually within 8 days of fertilization

Answer:

identical (aka monozygotic) Question 8: the germ layers responsible for development of the following structures: muscle, bone, and peritoneum: ____; nervous system and epidermis: ____; epithelial linings of

respiratory tracts and GIT: ___

Answer:

mesoderm; ectoderm; endoderm Question 9: toward the end of a full term pregnancy, ___ nearly fills the abdominal cavity

Answer:

uterus

Question 10: following implantation, the endometrium is now known as the

Answer:

decidua Question 11: one chromosome in each pair came from the __ and the other came from the ___

Answer:

mother, father

Question 12: alternative forms of a gene that code for the same trait

Answer:

allele

Question 13: once the blastocyst cavity is formed, the developing mass is called the

Answer:

blastocyst Question 14: an allele that dominates or masks the presence of another allele and is fully expressed

Answer:

dominant allele Question 15: hormone that contributes to breast development, protein anabolism, and catabolism of glucose and fatty acids

Answer:

hCS (human chorionic somatomammotropin) Question 16: the epithelial lining of many hollow internal organs and glands (ie GIT, resp tract)

Answer:

endoderm Question 17: maternal changes also include an ___ in total body oxygen; difficulty breathing may occur due to compression of ___

Answer:

increase, thorax Question 18: event in which differentiation into the 3 primary germ layers occur

Answer:

gastrulation Question 19: embryonic development of structures that will become the nervous system

Answer:

neurulation Question 20: the hormone responsible for preventing degeneration of the corpus luteum is ___ produced by the trophoblast

Answer:

HCG

Question 21: ___ recessive females may show sex-linked trait

Answer:

homozygous Question 22: is the study of events from fertilization of a secondary oocyte to formation of an adult organism

Answer:

developmental biology

Question 23: refers to genetic makeup; the DNA sequence of gene for a trait

Answer:

genotype Question 24: in ___ inheritance, a trait such as eye or skin color is controlled by the combined effects of 2 or more genes and my be influenced by environmental factors

Answer:

complex

Question 25: hormone that promotes milk synthesis

Answer:

prolactin Question 26: promotes milk synthesis and secretion; inhibited by progesterone during pregnancy

Answer:

prolactin Question 27: the 4th event in the first week of development; the attachment of a blastocyst to the endometrium

Answer:

implantation

Question 28: hormone that causes milk "let-down"

Answer:

oxytocin