In sea urchin, which step of egg and sperm recognition involves the formation of a fertilization cone?   Sperm binding to the egg's vitelline membrane   Fusion of the sperm and egg membranes   Acrosomal reaction   Chemo-attraction   Sperm binding to the egg's jelly coat

Q: Female bees are diploid, and male bees are haploid. The haploid males produce sperm and can…

A: Ploidy refers to the number of chromosomes present in the nucleus of a cell. In normal somatic…

Q: Which of the following is not an important component of the slow block to polyspermy Group of…

A: By reweaving the question, we have to find out which of the following is not an important component…

Q: Which of the following statements about the number of chromosomes in egg cells and zygotes is true?…

A: Egg cells have 23, and zygotes have 46.

Q: what is the name of the structure where gastrulation begins in each animal below. Frog and fish has…

A: Gastrulation is the process of the formation of the child inside the womb, the complete development…

Q: The cells that pull the archenteron through the blastocoel in the sea urchin are _____ cells called…

A: The early stage in the development of the embryo is referred to as gastrulation. Gastrulation is a…

Q: Which of the following steps of sea urchin fertilization initiates the formation of the…

A: Fertilization is the union of male ( spermatozoa ) and female ( ovum ) gametes which results in the…

Q: Double-fertilization in flowering plants is the process whereby one sperm cell fuses with the egg…

A: In flowering plant reproduction, double fertilisation is the fusing of the egg and sperm, as well as…

Q: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…

A: Fertilization is a process in which male pro nuclei and female pro nuclei come together(fuses that…

Q: Explain the preferable microscope settings for studying fertilization & maturation in Ascaris eggs.

A: Ascaris is infection to human where Fertilized and unfertilized Ascaris lumbricoides eggs are passed…

Q: Draw the amphibian and avian unfertilized eggs. Label membrane coverings and orientation of…

A: Unfertilized eggs are the eggs that have not been fertilized by sperm.

Q: What are some possible functions of spicules and spongin? How are these sponge parts alike and…

A: Possible functions of spicules and spongin: Large spicules visible to the naked eye are referred to…

Q: Rank the steps from first to last. To rank items as equivalent, overlap them. Reset Help Worms are…

A: There are different methods of reproduction in other organisms. It is studied under the domain of…

Q: How many functional eggs (ova) result from one oogonium?     A. 1 and 3 polar bodies   B. 18…

A: In sexually reproducing organisms haploid gametes are produced. Female gametes are called eggs…

Q: .Place the following events of the acrosomal reaction in the correct chronological order. (1) The…

A: The acrosome response is the acrosome's exocytosis, or the fusing of the acrosomal membrane with the…

Q: Classify and diagram embryos on the basis of their: (a) yolk content, (b) cleavage types, (3)…

A: Cleavage in animals is depends upon amount of yolk. Yolk distribution can be complete ( holoblastic…

Q: FIGURE 2 Using information from the graph in Figure 2, answer the following questions: During what…

A: The explanation is given below.

Q: Generate a hypothesis that may explain how contact by a sperm to the outside of the cell membrane of…

A: Calcium is stored in large amounts in endoplasmic reticulum and is released at the time of sperm egg…

Q: Sponge archeocytes can differentiate into A. eggs (oocytes) B. sperm C. choanocytes…

A: Sponges are organised at a cellular level. They don't have any features that may be classified as…

Q: What barriers must a sperm cross in order to fuse with the egg? How does the sperm accomplish this…

A: The union of two haploid gametes, the spermatozoa and the oocyte, hereafter referred to as the egg,…

Q: write in your own words, about the understanding of following terms. 1. Differentiation of neural…

A: 1.The differentiation of the neural tube into the various regions of the central nervous system…

Q: A sperm encounters an egg's jelly coat thus triggering the acrosomal reaction. What is the first…

A: Egg cells are the largest of all the cells in our body and are about 100 microns in diameter. It is…

Q: What are the preferable microscope settings for studying fertilization & maturation in Ascaris eggs…

A: A microscope is a laboratory instrument used to examine objects that are too small to be seen by the…

Q: Induced pluripotent stem cells are transforming medical research because they have the potential to…

A: Pluripotent stem cells are capable of producing all of the body's cells.

Q: In frog neurulation the notochord _______ the formation of the _______ in the ectoderm next to it.…

A: ANSWER) (a) expresses, neural plate

Q: Egg laying in fruit flies can be triggered (induced) when males transfer their sperm to females.…

A: Sexual reproduction is a type of reproduction in which organism under goes different cycles like…

Q: Which of the following statements relating to axis formation in chickens is FALSE? a. Henson's node…

A: A) true- Henson's node secretes proteins that antagonize BMPs and that protein is named as…

Q: Which of these is an example of asexual reproduction?     A hermaphrodite mating with another…

A: Reproduction is the biological process of self perpetuation race in which new organisms are produced…

Q: If you add a chemical to an egg cell that prevents the fast and slow blocks from occurring but does…

A: The fast block to polyspermy can be accomplished by altering the electric potential of the egg…

Q: In honey bees, males are developed parthenogenetically while workers are developed after sexual…

A: The males are the drones and they result from unfertilized egg and females emerge from fertilized…

Q: oncept Mapping: Fill-in the concept map of egg release (start with the ovary). Use the following…

A: The egg is collected by finger-like extensions on the end of the fallopian tubes as it is discharged…

Q: In mammals, primordial germ cells migration ends when they reach the _________________   posterior…

A: Primordial germ cells (PGCs) are highly specialized cells that act as precursors of gametes, which…

Q: Right after the fertilization process, the zygote polarizes first its membrane and then its…

A: introduction The zygote is polarized by an asymmetric stimulus from the environment, such as…

Q: Fishes and some species of amphibians like frogs fertilize their eggs outside of their body. Which…

A: External fertilization  Syngamy of gametes outside the female body/outer environment, notably in…

Q: Match the following with the statement that best describes them reproduction responsiveness +…

A: Reproduction is a process in which male and female gametes fuse together to form the zygote which…

Q: Which of the following is an illustration of permissive interaction?   -When implanted in the newt…

A: Note- Since you have asked multiple question, we will solve the first question for you. If you want…

Q: Select ALL of the following that occur during spermiogenesis: Microtubules form a flagellum The…

A: Spermatogenesis is the process through which primary male sperm cells undergo meiosis and generate…

Q: Which choice below shows a correct order of events during development? Gastrula, blastula, neural…

A: Embryonal development consists of many stages and involves  Cellular division  Cellular…

Q: Describe external fertilization  process of sea urchin egg with diagram

A: Fertilization in sea urchin occurs solely through the external process in which egg and sperm fuse…

Q: an egg cell were treated with EDTA, a chemical that binds to calcium ions: The acrosomal reaction…

A: Physiologically, the acrosomal reaction requires presence of calcium ions for the reaction to…

Q: phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other…

A: Neurulation refers to the folding process in embryos during embryonic development. It includes the…

Q: 12.Place the following events of the acrosomal reaction in the correct chronological order.(This is…

A: Acrosomal Reaction:  A sperm must first fuse with the plasma membrane before penetrating the female…

Q: There are 6 major events in fertilization. Discuss the process of fertilization or conception, with…

A:

Q: You are studying reproduction in starfish (also known as sea stars).  You are able to successfully…

A: Sexual reproduction is the process in which the male and female gametes fuse together to form a…

Q: IN AN OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules,…

A: The folding process in vertebrate embryos, which includes the transformation of the neural plate…

Q: IDENTIFICATION (Developmental Biology) Question #1. Refers to the arrangement of the mitochondria,…

A: Developmental biology deals with the study of development of multicellular organisms from single…

Q: oblast becomes the: ___________________ 2. The hypoblast becomes the: ____________________ Provide…

A: The  hypoblast become 1. extraembryonic mesoderm 2. Yolk sac

Q: An additional notochord is grafted next to the developing neural tube. Answer the following…

A: The neural tube is an embryonic structure that eventually leads to the formation of the brain and…

Q: Order the events leading to the sperm's nucleus fusing with the egg's nucleus.   Question 1…

A: Fertilization is defined as the union of sperm and ova. Fertilization leads to formation of zygote.

Q: Which of the following is not true about frogs eggs and blastula formation? Choose all possible…

A: In the blastula stage of development , a blastula contains large yolk filled cells at the vegetal…