Gametogenesis requires the conclusion of meiosis II. When does this occur in females? a. During fetal development b. At the onset of puberty c. After fertilization d. After implantation
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Gametogenesis requires the conclusion of meiosis II. When does this occur in females? |
a. During fetal development |
b. At the onset of puberty |
c. After fertilization |
d. After implantation |
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- Which of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus? A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote B. Sperm release enzymes to digest the protein layer of the secondary oocyte C. The entry of a sperm into the secondary oocyte D. The swimming of sperm from the vagina, through the uterus, and up to an oviducta. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isCleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the above
- Why is a second polar body expelled after fertilisation (select one) a. The oocyte must recativate the incomplete meiosis before fusing with the sperm b. To remove excess cytoplasm c. Before fusion with the sperm it must complete mitosis d. The fertilised oocyte is not a haploid cell until it expels the sperms mitochondriaAn individual has the chromosomal makeup XX and sexual differentiation proceeds normally. Which of the following would be the case? a. Mullerian ducts will degenerate b. Estrogen promotes development of the vagina c. Anti-Mullerian hormone is present d. Wolffian ducts will develop e. There will be no formation of fetal testesiv. Two nuclei cells in Stage X will be fertilized by two male gametes. State how the two male gametes are developed. v. Predict what will happen if double fertilization is not successful in Stage X.
- DIRECTION: Study the diagram below. Then, answer the analysis questions that follow. 3 HYPOTHALAMUS GNRH 1) 2. ANTERIOR PITUITARY ) Hormone 1 Hormone 2 (rising) (low) (surge due to • loop) Growing Follicie "OVULATION" ORGAN A Corpus Luteum (rising) Lthish) Hormone 3 (high) (high) Hormone 4 LEGEND Inhibits --- ORGAN B Stimulates Endometrium thickens "E is not fertilized" "Egg is fertilized" EVENTI EVENT II 3. ---Regarding oogenesis, diplotene stage begins at a.birth b.Meiosis II c.7th month of fetal development. d.pubertyWhich is/are true concerning chromosomal sex determination? a. Anyone born with two x chromosomes is a male b. Sperm always contain Y chromosomes c. Testis Determining Factor is produced by the SRY allele present on the Y chromosome d. Under normal circumstances, a human embryo that has both and X and a Y chromosome is male.
- a. What phase of meiosis is this cell undergoing? b. Identify the 3 things that are incorrect in terms of this cells structure and organization? c. Would this cell produce viable gametes? Why or why not.Gametogenesis is d. The process of gamete formation which goes through one division of meiosis Oc. The process of gamete formation which goes through one division of mitosis b. The process of gamete formation where the number of chromosomes is halved for 23 chromosomes a. The process of gamete formation where the number of chromosomes is doubled for 46 chromosomes None of the choices are correct Question 3 or False: Meiosis undergoes two sets of divisions.Which of the following is not a mechanism on how contraceptive pills work to prevent pregnancy? A. thinning the endometrium to prevent implantation B. inhibition of follicular development and suppression of ovulation C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly D. stimulates the production of high testosterone levels