You are working in a research lab investigating imprinting. You have created some zygotes by exchanging the pronuclei of different embryos so that some embryos have only paternal chromosomes or only maternal chromosomes. If you implanted a zygote carrying only paternal chromosomes into a surrogate uterus, you might expect a. A healthy embryo would grow, but the placenta would be defective

You are working in a research lab investigating imprinting. You have created some zygotes by exchanging the pronuclei of different embryos so that some embryos have only paternal chromosomes or only maternal chromosomes. If you implanted a zygote carrying only paternal chromosomes into a surrogate uterus, you might expect a. A healthy embryo would grow, but the placenta would be defective

Name: Please answer fast You are working in a research lab investigating imp
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Description: Please answer fast You are working in a research lab investigating imprinting. You have created some zygotes by exchanging the pronuclei of different embryos so that some embryos have only paternal chromosomes or only maternal chromosomes. If you imp

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter12: 1+1=3 (or More)

Section: Chapter Questions

Problem 8CTE

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000000000000 4 You are discussing the process of implantation to a couple who has been unsuccessfully trying to conceive for the past few years. In your description you show them the layer of mitotically active cells of the developing placenta during implantation. In the above picture these cells are represented as? C Select one: a.2 b.4 c. 1 d. 3
Which of the following statements are correct? Explain your answers. A. The egg and sperm cells of animals contain haploid genomes. B. During meiosis, chromosomes are allocated so that each germ cell obtains one and only one copy of each of the different chromosomes. C. Mutations that arise during meiosis are not transmitted to the next generation.
Normal somatic cells of horses have 64 chromosomes (2 n = 64). How many chromosomes and DNA molecules will be present in the following types of horse cells? Number of DNA molecules Number of Cell type chromosomes a. Spermatogonium b. First polar body. c. Primary oocyte d. Secondary spermatocyte [© Dozornaya/iStock Photo.]
Cleavage... 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
Which of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.
Which of the following statement does NOT correctly describe the event of the following fertilization? Select one: A. As hCG takes over maintaining the endometrium immediately after implantation, the corpus luteum degenerates into the corpus albican. B. All 16 cells in a morula are truly totipotent, meaning that they can become any cells in the human body. C. The trophoblast has important in maintaining the pregnancy, as it prevents the endometrium from shedding. D. Only inner cells mass in a blastocyst is pluripotent.
One 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…
An 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 testes
Which of the following rows correctly describes the process and the location of cleavage following fertilization, respectively? Select one: а. Type of Division Location Meiotic Uterus b. Type of Division Location Meiotic Fallopian tube с. Турe of Division Location Mitotic Fallopian tube d. Type of Division Location Mitotic Uterus
A human with the SRY gene would: a produce eggs during gametogenesis b have wolffian ducts degrade and ovaries form during development c have mullerian ducts degrade and testes form during development d have two X chromosomes e not have a bipotential gonad
Gastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the above
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