QUESTION 3 Which of the following statements is true regardng neurulation? The notocord is formed from ectoderm The notochors is present throughout development and disappears after birth The notochord produces signals that induce neural plate formation The notochord produces signals that induce neural tube formation

Q: QUESTION 17 What is neurulation? O a. The process by which structures become complex and…

A: Some transcription factors play a key role in the formation of the neural tube. These transcription…

Q: Match up the following components of the cortical blood-brain barrier with their developmental…

A: The blood-brain barrier is an important feature of the human central nervous system. It constitutes…

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: QUESTION 18 Which of the following are not a general property of sexual reproduction? •…

A: This statement describes hermaphroditism, a condition where an organism possesses both male and…

Q: 2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe…

A: When the survival  time of living organisms is limited then the process which enables their…

Q: QUESTION 1 Which of the following is not a vertebrate orexic agent? • Agouti-related peptide •…

A: QUESTION 1: The correct answer is Anandamide. Anandamide is a neurotransmitter that acts as an…

Q: Q1. How many stages of cleavage can you identify? Q2. What is the adult fate of notochord?

A: Cleavage is the division of cells in early embryo. Notochord is a cartilaginous skeletal rod…

Q: Sexual reproduction requires which of the following? O love & tenderness independent assortment &…

A: Sexual reproduction is a type of reproduction in which the formation of new offspring occurs by the…

Q: Asexual reproduction in animals might involve O fragmentation and gemmule production. O…

A: Reproduction may be of two types- Sexual Reproduction and Asexual Reproduction.

Q: What group of proteins play a key role in controlling the program of developmental changes? O…

A: Gene expression is the process by which the instructions in our DNA are converted into a…

Q: The formation of the fertilization envelope in a sea urchin egg is most directly stimulated by an…

A: After fertilisation, a barrier known as the fertilisation envelope develops around the egg. The egg…

Q: All of the following are requirements for successful external fertilization except for one. Which…

A: Since there are multiple questions in this particular question I'll answer the first one for you. If…

Q: the complexities of egg formation and meiosis, fertilization, embryo and fetal development, and the…

A: Sexual reproduction is the process in which a new organism is created by combining the genetic…

Q: Comparing the nervous system with the endocrine system WHAT DETECTS WHAT IS THE HOW IS THE CHANGE?…

A: Both the nervous system and endocrine system mediate control and coordination.

Q: Mammalian sperm don’t live very long after ejaculation.Therefore, for a rhino cow to become…

A: Induced ovulation in animals is done to increase the offspring count to combat the scarcity of…

Q: Which type of cleavage leads to the development of a bird?

A:

Q: In sea urchin, which step of egg and sperm recognition is mediated by sperm-activating peptides?…

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: Question 10 Of the following, which is correctly matched with its reproductive mechanism? Monotremes…

A: Option 1) Monotremes of the order monotremata are egg laying mamalian found in Australia and New…

Q: What is aneuploidy? Another term for a haploid cell O When more than one gene controls a single…

A: There are many types of chromosomal abnormalities like aneuploidy, polyploidy, etc.

Q: What will be the independent & dependent variables in this experiment?

A: 1. Dependent variable -   a. a Number of urchins used   b.  Concentration of Carbon dioxide  c.…

Q: We discussed environmental sex determination in reptiles, where the sex of the individual is…

A: The modes of sex determination that fit the category of environmental sex determination are…

Q: Please explain Gametogenesis only in Embryology and Development Process of human.

A: Gonads are the sex glands that develop from the mesoderm of the embryo. The main function of the…

Q: Name some derivatives of the neural What is the lamina terminalis

A: Q1. Neural Crest: Neural crest cells are a type of transitory cell that arises from the embryonic…

Q: QUESTION 1 Which of the following are not hormonally controlled examples of parental investment in…

A: Other incorrect options:Vitellogenin production: Vitellogenin is a protein precursor of egg yolk…

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 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: Which of the following is the best description of how pregnancy most often occurs? Sperm enter the…

A: The sperm is the sex cell formed by the males in the testes. The sperm cells are formed from the…

Q: Which of the following is r Counting b-Fooding e-Freezing d-Media preparation e-Thawing 7. Which of…

A: The study of how animals and plants grow and develop is known as developmental biology. In addition,…

Q: Which of the following features are correct regarding this female organism? (several answers must be…

A: Mammals are characterized by presence of mammary gland which present in female for milk production…

Q: Which of the following is a similarity between spermatogenesis and oogenesis in vertebrate animals?…

A: Gametes are haploid cells produced in the male and female gonads. The male gamete is called sperm…

Q: The graph describes the change in egg membrane potential associated with fertilization in the sea…

A: Reproduction is the process of producing a new generation of organisms from the existing ones. It…

Q: are found at the chalazal end of the embryo sac. Polar nuclei Synergids Eggs Ovules Antipodals

A: Angiosperms are also known as Flowering Plants. They are the type of plants that are capable of…

Q: QUESTION 9 What is the physiological role of a gonadotropic hormone in vertebrates and…

A: The answer is well explained above.

Q: If an embryo was lacking HOX genes many problems might happen including this.. neural crest would…

A: The Hox genes' function in the embryo is to specify positional uniqueness instead of the formation…

Q: QUESTION 7 Which of the following are not characteristically controlled by hormones during…

A: Step 1.a). The levels of muscle cell metabolic activity: This refers to the rate at which muscle…

Q: QUESTION 15 Which of the following statements accurately represents the hormonal control of…

A: Solution 15:The correct option is "Ecdysone indirectly effects reproduction through its effects on…

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: What is in common between Epinephrine-secreting cells of the Adrenal Medulla gland and…

A: A neural crest is a collection of certain cells that develops at the edge of the neural plate…

Q: What were the evolutionary pressures that forced the adoption of secondary neurulation as opposed to…

A: The formation of the central nervous system (CNS) is stimulated by the notochord. This process is…

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: 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: Gonads and muscles of bilateral animals are derived from endoderm. True False

A: When fusion occurred between male amd female gametes and zygote is produced , it undergo certain…

Q: Question # 11. What is Recapitulation theory? What are evidences proving Von Baer concept?

A: At the dawn of the nineteenth century, naturalists were staring through microscopes in hopes of…

Q: QUESTION 8 During which phase of mammalian reproductive cycles is characterized by the growth of…

A: The phase of the mammalian reproductive cycle characterized by the growth of follicular cells…

Q: In a herd of sheep there is a genetic defect which causes the sleep to be stunted. This mutant gene…

A: Introduction  The process of genes being passed from parents to children is referred to as…

Q: 8. The major event in the embryonic development of animals that results in a layered embryo is…

A: Fertilization is the process in which the male and the female gametes unite to form the zygote.…

Q: QUESTION 17 Which of the following best explains the reason why gamete production is commonly…

A: The generation of gametes enclosed creates a special environment that aids in meiosis. Conditions…