Zygote Study guides, Class notes & Summaries

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...

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...

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) - -...

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...

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...

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...

Chapter 54—Prenatal Care MULTIPLE CHOICE 1. Which of these statements regarding prenatal risk factors is TRUE? a. Fathers who smoke can contribute to decreased birth weight in their infants. b. Fetal alcohol syndrome is associated with excessive intake of alcohol during the second trimester of pregnancy. c. Illicit drug use is responsible for a majority of spontaneous abortions and stillbirths. d. Mothers who are not immune to rubella should be immunized during the first trimester o pr...

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...

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...

Bio 172 Exam 1 Questions and Answers Rated A+ What are the events that take place in a sexual cycle and why is this cycle significant? - 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? Excavata What is asexual reproduction? One parent, and offsprings are identical cl...