Compare and contrast gametogenesis in starfish and sea urchin. Please make sure that the answer is really about the gametogenesis of both animals.
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Compare and contrast gametogenesis in starfish and sea urchin.
Please make sure that the answer is really about the gametogenesis of both animals. please don't copy and paste from previous answers already
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- Clownfish are protandrous hermaphrodites. Determine whether the following features are encoded by the clownfish genome or are influenced by the proteome in response to the environment. The juvenile clownfish has both male and female immature reproductive organs. Clownfish are able to produce both testosterone and 17-estradiol. Genome encoded Increased estradiol levels lead to increased levels of proteins that promote the growth of female sex organs. Increased testosterone levels lead to increased - levels of proteins that cause male sex organs to develop Proteome influencedEgg laying in fruit flies can be triggered (induced) when males transfer their sperm to females. Which of the following is a selective advantage of induced egg laying for the male flies? Less time and energy is expended by the male. The males do not have to produce as much sperm. More eggs can be fertilized. A male fly's sperm is more likely to be used for fertilization. Submit Request AnswerIn eusocial insect societies, explain why sterile workers spend their lives providing for their queen and sisters using Hamilton's rule. (Hello, Please write ur answer in ur own s-ntences, if you can please write your answer to a word document and screen shoot the answer and attach the image here. Please do not plagiarise or I have to give thumbs down. Thank you have a nice day.)
- In C. elegans there are two sexes: hermaphrodite and male. Sex is determined by the ratio of X chromosomes to haploid sets of autosomes (X/A). An X/A ratio of 1.0 produces a hermaphrodite (XX), and an X/A ratio of 0.5 results in a male (XO). In the 1970s, Jonathan Hodgkin and Sydney Brenner carried out genetic screens to identify mutations in three genes that result in either XX males (tra-1, tra-2) or XO hermaphrodites (her-1). Double-mutant strains were constructed to assess for epistatic interactions between the genes (see table). Propose a genetic model of how the her and tra genes control sex determination.Put “disappear”, if they disappear in the process of development and put the word “dissolved”, if they dissolved in the process of development. •hypoblast •intermediate mesoderm •lateral plate mesoderm •mesoderm •morula •neural crest cells •neurulation •notochord •occipital somites •paraxial mesoderm •primitive node •primitive streak •trophoblast •yolk sac •amniotic cavity •blastula •cleavage •ectoderm •embryoblast •embryonic disc •endoderm •epiblast •fertilization •gametes •gastrulationUsing the diagram as a reference, arrange the items in the sequence in which they occur. Male and female pronuclei form Secondary oocyte present in oviduct Oocyte activation Meiosis finishes Amphimoxis Acrosomal enzymes disrupt the corona radiata Reset Help
- Identify the asexual reproduction shown in the picture. Write a brief explanation on their process using the picture belowPlease 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 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 b. An ectopic pregnancy would likely occur c. A healthy fetus would likely develop d. A hydatidiform mole would likely formUse the following information to answer the next question. Life Cycle of a Pronghorn Antelope Process 4 Process 2 Process 1 Process 1 Process 3 Adult reproductive organs Process 4 Gametes Embryo During which process does crossing over take place? Select one: Process 2 Zygote Process 3
- In fertilization, select answer a male gamete and a female gamete two female gametes two male gametes fuse to produce a select answer zygote female germ cell male germ cellIn the provided image (whole mount of 33-hour chick embryo), color the respective germ layers and its derivatives: YELLOW - Endoderm & its derivatives BLUE - Ectoderm & its derivatives GREEN - Notochord ORANGE - Yolk RED - Mesoderm & its derivativesThe figure below shows a time-dependent decrease in size (F to H) of a Hyloxalus frog's yolk plug (labeled with "yp") due to morphogenic movements of vegetal cells towards the internal of the embryo. What major stage of embryonic development is shown in the figure above? Choose the best answer. E 10 F st 12 H st 12.5 O Gastrulation O Fertilization O Blastulation O Cleavage Formation