(a)
To draw:
Four rounds of mitosis of the stem cell.
Concept introduction:
Spermatogenesis is the process where sperm cells are produced through the meiosis of the spermatogonium. Stem cells are the undifferentiated cells which can give rise to every type of cell it is found with and in the process it also gives rise to another stem cell.
(b)
To draw:
Single mitosis followed by meiosis of a spermatogonium.
Concept introduction:
Spermatogenesis is the process where sperm cells are produced through the meiosis of the spermatogonium. Stem cells are the undifferentiated cells which can give rise to every type of cell it is found with and in the process it also gives rise to another stem cell.
(c)
To determine:
What would happen if the stem cell divides like the spermatogonium.
Concept introduction:
Spermatogenesis is the process where sperm cells are produced through the meiosis of the spermatogonium. Stem cells are the undifferentiated cells which can give rise to every type of cell it is found with and in the process it also gives rise to another stem cell.
Want to see the full answer?
Check out a sample textbook solutionChapter 36 Solutions
CAMPBELL BIOLOGY IN FOCUS-W/MASTR.BIO.
- Which mechanism prevents an ovum from being fertilized by multiple sperm cells? Select one: a. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the conception of twins or triplets. b. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs. c. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cells can penetrate the coating. d. The egg can only survive in the Fallopian tube for 24 hours as it does not have mitochondria to produce energy.arrow_forwardHuman fertilization involves the fusion of two haploid gametes, producing a zygote containing (a) 23 chromosomes. (b) 46 chromosomes. (c) the normal haploid number of chromosomes. (d) 46 pairs of chromosomes.arrow_forwardA diploid cell contains three pairs of homologous chromosomes designated C1 and· C2, M1 and M2, and S1 and S2; no ·crossing over occurs. What possible combinations of chromosomes will be present in (a) daughter cells following mitosis (b) the first meiotic metaphase (c) haploid cells following both divisions of meiosis? For your answer give the number, show your work and clearly designate if the response is for part(a), (b), or (c)arrow_forward
- Meiosis II is similar to mitosis in that(A) sister chromatids separate during anaphase.(B) DNA replicates before the division.(C) the daughter cells are diploid.(D) homologous chromosomes synapsearrow_forwardWhich statements are true about meiosis? **Select 2 choice(s)** a) It increases the number of chromosomes. b)It duplicates the number of chromosomes by 2. c)It occurs in an organism's reproductive organs. d)It reduces the number of chromosomes by half. e)It occurs when a single haploid cell divides twice. f)It results in the formation of multiple diploid cells. Please I need a surely answer and a quicker responsearrow_forwardOne day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image below: 1. When the female butterfly’s eggs are fertilized, the fusion (2N) nucleus will divide repeatedly giving rise to cleavage nuclei, which: a. can become trophocytes that migrate into the germarium and connect to the developing embryo by nutritive cords. b. can migrate to the periplasm and become cleavage cells that ultimately give rise to the germ band and the serosa. c. can migrate to the peripheral cytoplasm and become germ cells, which eventually move into the forming gonads and become oogonia or spermatogonia. d. can remain in the yolk and become vitellophages that digest the yolk and make nutrients available to the forming embryo. e. only b and c f. only a and d g. all except a h. all except d 2. In the mature, unfertilized egg of the adult female butterfly: a. bicoid mRNAs will congregate at the end of the…arrow_forward
- Somatic cells of chimpanzees contain 48 chromosomes.How many chromatids and chromosomes are present at: (a) anaphase of mitosis, (b) anaphase I ofmeiosis, (c) anaphase II of meiosis, (d) G1 priorto mitosis, (e) G2 prior to mitosis, (f) G1 prior tomeiosis I, and (g) prophase of meiosis I?How many chromatids or chromosomes are presentin: (h) an oogonial cell prior to S phase, (i) a spermatid, (j) a primary oocyte arrested prior to ovulation,(k) a secondary oocyte arrested prior to fertilization,(l) a second polar body, and (m) a chimpanzee sperm?arrow_forwardWhich of the following cells are haploid? (a) (b) spermatogonium ova (c) (d) oogonium somatic cellarrow_forwardDraw a schematic diagram showing spermatogenesis vis-à-vis oogenesis. Label the stage of development and chromosome number of daughter cells at the following levels of maturation: (a) mitotic proliferation (b) meiosis I and II (c) maturation. Table 2: Spermatogenesis vis-à-vis Oogenesis Spermatogenesis Oogenesisarrow_forward
- In a comparison of the stages of meiosis to the stages of mitosis, which stages are unique ... to meiosis and which stages have the same events in both meiosis and mitosis?arrow_forwardOogenesis is the process of female gamete (ovum or egg) production in animals. Spermatogenesis is the process of male gamete (sperm) production in animals. Although both processes produce gamete(s), there are distinct similarities and differences between the two. Compare and contrast oogenesis to spermatogenesis by drawing a diagram showing the two processes. In your hand-drawn diagrams, be sure to include when the processes of mitosis, meiosis I and meiosis II are occurring identify each germ cell structure and its ploidy highlight 4 differences between the two processesarrow_forwardFill in the blanks *Items (1) to (23)arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning