Zygote - Study guides, Revision notes & Summaries
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NBDHE- Embryology and histology (StudentRDH) Questions And Answers A+
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NBDHE- Embryology and histology (StudentRDH) Questions And Answers A+ 
Embryology - ANS-study of prenatal development, from fertilization to birth. 
Prenatal development - ANS-usually divided into trimesters (each lasting 3 months), but can also be 
divided into three periods (preimplantation, embryonic, and fetal) marked by changes in the 
development. 
-First trimester includes preimplantation and embryonic period 
Preimplantation period` - ANS-first week of conception. 
Embryonic period - A...
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Bio 172 Exam 1 Questions with Complete Correct Answers | Grade A+
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What are the events that take place in a sexual cycle and why is this cycle significant? 
Ans: -Gamete formation (1n Haploid) 
-Fertilization (Syngamy) of gametes. 
-Zygote formation. Zygote is first 2n (Diploid) cell. 
Then recombination occurs 
(Basically, Haploid cells (Gamete and spirm) form to create Diploid cell (Zygote)) 
What is the first supergroup? 
Ans: Excavata 
What is asexual reproduction? 
Ans: One parent, and offsprings are identical clones to parent. 
What are the 3 organisms of...
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UAB BY 123L Exam 3 Study Guide Graded A 2024
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karyotyping - number and type of chromosome present 
 
Barr body - -condensed inactive X chromosome near nucleus of cell 
-all females have 1 Barr body 
 
nondisjunction - failure of chromosomes to separate during meiosis 
 
autosomal nondisjunction - -failure of chromosomes (other than sex chromosomes) to separate during meiosis 
-exs: trisomy 21, trisomy 18 
 
translocation - portion of one chromosome is transferred to another (usually nonhomologous) 
 
abnormal egg (XX) x normal sperm (X) - -...
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UAB BY 123L Exam 3 Questions and Answers 2024;full solution pack
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karyotyping - number and type of chromosome present 
Barr body - -condensed inactive X chromosome near nucleus of cell 
-all females have 1 Barr body 
nondisjunction - failure of chromosomes to separate during meiosis 
autosomal nondisjunction - -failure of chromosomes (other than sex chromosomes) to separate 
during meiosis 
-exs: trisomy 21, trisomy 18 
translocation - portion of one chromosome is transferred to another (usually nonhomologous) 
abnormal egg (XX) x normal sperm (X) - -zygote: X...
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Bio 152- Plants Questions with Complete Solutions
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Importance of plants Correct Answer-food, natural products, ecosystem services (oxygen, ozone, coal), culture 
 
Preadaptations of Charophytes Correct Answer-fresh water spores covered in sporopollenin, life cycle allows dispersal by wind (spores) 
 
Gametophyte Correct Answer-haploid (n), makes gametes by mitosis 
 
Sporophyte Correct Answer-diploid (2n), makes spores by meiosis 
 
Alternation of Generations Correct Answer-Gametophytes go through mitosis to create gametes, which form zygote, zy...
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BIOD 121 MODULE 6 EXAM LATEST UPDATED 2024
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BIOD 121 MODULE 6 EXAM LATEST UPDATED 2024 
 
key developmental stages - Fertilization 
Blastogenic stage 
Embryonic stage 
End of first trimester 
Fetal Stage 
Tobacco use can - increase the risk for miscarriage, stillbirth, preterm delivery, and 
low birth weight infants 
Alcohol use - is linked to a risk for fetal alcohol syndrome, which results in physical 
and mental disabilities and growth retardation 
drug use - increases the risk for low birth weight, preterm delivery, miscarriage...
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WGU D115 master set-Advanced Pathophysiology for the Advanced Practice Nurse Already Graded A+
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WGU D115 master set-Advanced Pathophysiology for the Advanced Practice Nurse Already Graded A+ Which type of genetic disease affects males more frequently than females? Sex-Linked recessive. Since males only have one X and one Y, if the affected chromosome has the illness, it will be expressed. 
In which two conditions are chromosomal abnormalities the leading known cause? Intellectual disability and fetal miscarriage. Chromosome abnormalities are the leading known cause of intellectual disabili...
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asc 101 exam 2 questions & answers 2024/2025
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asc 101 exam 2 questions & answers 2024/2025 
 
 
which of the following is not a male accessory sex gland? 
a) ampulla 
b) seminal vesicles 
c) vas deferens 
d) prostate gland 
e) bulbourethral glands - ANSWERSc) vas deferens 
 
which of the following lists the stages of embryo development in order of appearance? 
a) morula, egg, zygote, blastocyst 
b) blastocyst, egg, morula, zygote 
c) zygote, morula, blastocyst, egg 
d) egg, zygote, morula, blastocyst 
e) zygote, blastocyst, morula, egg - AN...
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MCN (Lesson 2) "Normal Pregnancy" Exam
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What are the phases of menstrual cycle? - menstruation, follicular phase, ovulation, 
luteal phase, and ischemic phase. 
How many hours does an ovum need to be capable of fertilization? - 24 hours. (48 
hours the most). 
Total critical span during sex must occur for fertilization to be successful is - 72 
hours or 48 hours before ovulation, plus 24 hours afterward. 
Eggs are propelled into fallopian tubes (ampulla) by: - fimbriae, peristalsis of tube, 
and cilia of tube. 
What is the zona pelluc...
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Bio 112 Exam Martin Ball State Questions and Answers Already Passed
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mollusca body plan shared features -foot: mass of muscle tissue used for movement and/or 
manipulation 
-visceral mass: clump that contains most of the organs 
-mantle: tissue that drapes over the organ clump and secretes the shell in shelled members 
4 characteristics shared by all animals -eukaryotic- membrane bound nucleus and organelles 
-multicellular 
-heterotrophic- consumes food to get energy 
-have tissues that develop from embryonic layers (germ layers) 
germ layer formation step 1 spe...
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