For the next few questions, study the following figure and use the answer choice
ID: 3519206 • Letter: F
Question
For the next few questions, study the following figure and use the answer choices below 92) When a fertilized zygote divides into two separate embryos before implantation,could result a) Monozygotic twins b) Dizygotic twins c) Fraternal twins d) Conjoined twins For the LAST jew questions (woo hool), select from a) Estradiol c) Luteinizing hormone (LH) d) Follicle stimulating hormone (FSH) e) Human chorionic gonadotropin (hcG) ab) Anti-Müllerian hormone (AMH) ac) Follicular ad) Luteal ae) Menses 3 bc) Ovulation 93) Granulosa cells of the developing follicle secrete 94) During the luteal phase, . levels rise and lead to 95) Within 1 day after a surge in this hormone, ovulation 96) The first half of the ovarian cycle (Days 1- 14) is called 97) Levels of this hormone rise steadily during the mid-to- 98) This event marks the first day of the menstrual cycle. which inhibits the maturation of other follicles. increased vascularization of the endometrium and storage of fuel molecules to prepare for pregnancy. a) Step 1 b) Step 2 c) Step 3 d) Step 4 e) Step 5 ab) Step 6 82) Haploid cells first occur at this step.B 83) Mitosis is occurring during this step. P 84) Spermatids are formed during this step.D 85) Primary gametes are present in this step. P 86) If fertilization does not occur, this step will occur. thephase. late follicular phase. detected by most home pregnancy tests. the early follicular phase cues the development of one or 99) This hormone is produced by the placenta and is 100) A small elevation in this hormone's concentration during more secondary cocytes in the ovary For the next few questions, select from: CONGRATUATIONS!! a) Sertoli cells b) Interstitial cells/Leydig cells c) Follicle stimulating hormone (FSH) d) Luteinizing hormone (LH) e) Gonadotropin-releasing hormone (GnRH) ab) Inhibin YOU'VE FINALLY COME TO THE END OF BIO 20611 THANKS FOR ALL YOUR HARD WORK THIS SEMESTER! 87) During spermatogenesis, provide sustenance or nourishment for developing spermatogonia. 88) This gonadotropin stimulates gametogenesis in both males and females 89) This hormone is released from the hypothalamus 90) Androgen-binding protein is produced as a result of this hormone's action at the testes 91) This signal molecule, released from the male and female gonads, reduces FSH secretion. Page 5 of 6 FORM AExplanation / Answer
Answer82= step 3(C)
Answer 83=step 1(A)
Answer84=step 4(D)
Answer 85=step 5(E)
Answer86=step 6(ab)
EXPLANATION= STEP 1 represents proliferation of spermatogonium amd oogonium mitotically ( 1 cell producing 2 and thn 2 producing 4 and all are diploid without any reduction in their chromosome number)
Step 2=some cells out of these will undergo meiosis 1 and some wil comtinue undergoing mitosis amd proliferating their number.
Step 3= after meiosis 1 ( in male 2 primary spermatocyte are produced which are haploid because meiosis is reductional division) and in female only one primary oocyte is produced along with polar bodies.
Step 4=they further undergo meiosis 2 amd leads to formation of 4 secondary spermatocyte in male amd 1 secondary oogonium ( both are haploid in nature)
Step 5= bith primary male gamete( sperm) and female gamete(ovum)
Step 6=if fertilization doesnt occur then unused ovum is released along with blood in females as menstruation every month.
Answer87=a ( sertoli cells)
Answer88=c( FSH)
Answer89=E ( GnRH)
Answer90=d (LH)
Answer91=ab( inhibin)
Answer 92=a
before implantion if zygote divides, leads to monozygotic twins
After implantaion , conjoined twins.
Note= not feasible to explain all the question at one time.. Plz segregate question and then post. Thanku