Q: Is the embryonicdevelopment in birds direct orindirect?
A: Animal developmental process can be direct or indirect. Direct development: It refers to the…
Q: Name the process of development of egg into young one without fertilization?
A: The above-mentioned definition is true for parthenogenesis. It is a type of asexual reproduction…
Q: What two germ layers develop in the embryos of diploblastic animals? Check the two that apply.…
A: The two germ layers of cells found in diploblastic animals are the outer ectoderm and the inner…
Q: What selective forces might limit the stage of development at which humans are born?
A: Introduction: The evolution of humans are influenced by the following five factors: Natural…
Q: Contrast developmental activities in embryos before and after they reach the mid-blastula…
A:
Q: Define about Spermatogenesis and oogenesis in mammals. ?
A: As we know all living organisms are made of basic unit of structure and function called as cell.…
Q: What structural adaptation in chickens allows them to lay theireggs in arid environments rather than…
A: The vertebrate embryo requires an aqueous environment for their development. The amphibians and…
Q: How does oviposition occurs in female turtles. Provide the pathway involved in the oviposition…
A: Answer :- As we know that Males have a couple of penises that pass sperm from their cloaca to the…
Q: What is the difference between a mesoderm and a mesoglea?
A: Diploblastic animals contain body wall which develop from 2 embryonic germ layer - ectoderm and…
Q: Where is the egg found in seed plants?
A: Seed plants are a group of plants. Gymnosperms and angiosperms form the group. Their seeds have…
Q: In a reptile egg, the extraembryonic membrane thatencloses the embryo in a watery environment is…
A: Answer is b.) amnion.
Q: What Causes the End of Cleavage in a Frog Embryo?
A: All frogs reproduce sexually, but instead of the fertilization taking place inside the female, it…
Q: Explain the development of human embryo with diagrams.
A: to understand the progess of embryo development in humans, let's use the follwoing flowchart and…
Q: Describe internal fertilization process in sea urchin.
A: The process of internal fertilization occurs when a male and female gamete fuse inside the female…
Q: Explain how egg rotation and gravity determine anterior posterior patterning in chick embryos
A: Anterior posterior pattern formation is the regionalization process in which specific areas of cell…
Q: what characteristics are shared among bird embryos, pig embryos, and human embryos?
A: There are several similarities between the embryos of different species of animals and birds. It was…
Q: If the egg is not fertilized in mammals, the endometrium is shed as
A: Introduction: The inner layer is the endometrium. During a woman's menstrual cycle, hormones cause…
Q: Where is the egg located in the archegonium?
A: In Bryophytes plants, the female and male sex organs are termed archegonia and antheridia…
Q: A fertilized egg is the blue print of future development’. Explain
A: A single cell-fertilized egg is transformed into a fully developed and independent individual. It is…
Q: Does the distribution of Ca²+ in an egg correlate with formation of the fertilization envelope?
A: During fertilization, sperm-induced rise in cytoplasmic Ca2+concentration.
Q: What kind of cleavage pattern characterizes snail development? Describe its orientation.
A: Snails, earthworms and flatworms are remarkably different animals, but they all exhibit a very…
Q: How is the process of gastrulation accomplished in mammalian embryos?
A: In developmental biology Gastrulation is the process that take place in the early embryonic…
Q: Which of the following is common to the development of bothbirds and mammals?(A) holoblastic…
A: Birds are any warm-blooded vertebrate of the class Aves. Birds have forelimbs modified into wings, a…
Q: Which ovary is functional in birds?
A: Ovary is the female reproductive organ found in lower chordates to higher animals. Ovary produces…
Q: Explain how Hox gene expression affects vertebrate development.
A: Hox genes are a set of transcription factor genes that are responsible for the development of…
Q: Which type of cleavage leads to the development of a bird?
A: Cleavage refers to repeated cell division in the fertilized egg. Cleavage leads to the formation of…
Q: . How does the fertilization envelope form in sea urchins?What is its function?
A: Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete…
Q: Occasionally, two primitive streaks form in one embryonic disk. Predictthe result. What happens if…
A: Primitive streak : A primitive streak is defined as a transient structure that forms during the 15…
Q: Where does the fertilization of a human egg normally take place?
A: Fertilization is the process of combining haploid gametes (egg and sperm) to produce a diploid…
Q: reproductive
A: Turtle- It is an reptile belongs to order Testudines. these are mainly characterized by a shell…
Q: Cleavage Gastrulation Neurulation Organogenesis
A:
Q: what is the process which involves in the self-destruction of cells in the developing embryo as…
A: Ans: The process which involves the self destruction of cells in the developing embryo is very…
Q: Explain gastrulation in fish
A: Gastrulation in Fish: - Gastrulation is defined as a process in which gastrula is formed from a…
Q: are the essential similarities and differences between the development of sperms and eggs in mammals
A: Both sperm and ovum are haploid having 'n' number of chromosome. Both undergoes mitosis as well as…
Q: Elaborate on the oviposition process of female turtles. Provide the pathways included in the…
A: INTRODUCTION Any reptile having a bony shell, including tortoises, is classified as a turtle in…
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: From what the amnion of mammalian embryo is derived?
A: Amnion is an extraembryonic membrane also known as fetal membrane along with chorion, allantois, and…
Q: Number these steps in vertebrate embryogenesis in order. ______ formation of archenteron…
A: The embryonic development begins after fertilization that involves fusion of male and female…
Q: What is the fate of the four extraembryonic membranes in embryos of placental mammals?
A: Any of the tissues, derived from the fertilized egg, that encase or in any case add to the help of…
Q: How is and egg (oocyte) prepared during oogensis for fertilization? Why is preparation essential to…
A: The process of formation of gametes is known as gametogenesis. In females, oogenesis is a process of…
Q: Provide and label an image of an egg that is in its early cleavage, distinguish this stage from…
A: Embryonic development: a. It is the development that occurs when the embryo is formed and develops…
Q: What are the consequences of the differences in the yolk amount and distribution of eggs among…
A: The amount and distribution of yolk inside the egg decides the pattern of cleavage. The type of…
Q: What is a fertilized egg called?
A: Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete…
Q: The embryo below exhibits cleavage. radial bilateral spiral O modified
A: During developmental periods single cell zygote is transform into multicellular embryo by the…
Q: Draw the chromosomes in the zygote (cell after fertilization) egg cell fertilization sperm cell of
A: The fusion of feale gamete (egg cell) and male gamete (sperm) is termed as fertilization.
Q: explain the developmental processes that will happen to the fertilized ovum of a dog
A: The age at which dogs reach sexual maturity varies considerably. Smaller breeds appear to mature…
Q: Is the embryonic development in earthworms direct or indirect?
A: The earthworm is a hermaphrodite organism in which both male and female reproductive organs are…
Q: In animal phyla with radial cleavages, cell fate of the embryo is?
A: Radial cleavage is a developmental pattern of embryos where the cell division happens…
Step by step
Solved in 2 steps with 2 images
- Question #5 Stages of MeiosisPlease help me for part a and b, thank you so much!Question 49 The scientist(s) who showed that DNA contained equal amount of certain nitrogen bases (i.e., A=T and C=G) is (are): Question 50 The cell that starts meiosis I is: haploid diploid a somatic cell a gamete Question 51 What is “silent” mutation? Question 52 Where does mitosis occur within this figure? (see letters in boxes) A B C D C and D Question 53 What form of chromosome abnormality is shown in the following Figure? Question 54 What type of mutation causes Sickle cell anemia? Question 55 The order of nucleotide bases on two sides of a DNA double-helix is Identical Similar Complemetary Nonidentical Question 56 What types of mutations are NOT passed to future generations? Question 57 What enzyme copies DNA into RNA? Question 58 Meiotic cell division replicates a cell's DNA ____________ and then divides ______________ twice; twice. once; once. None of the answer choices are correct. twice; once. once; twice. Question 59 ____ divide during meiosis I, while…Question 3 The Pill, the Patch and the Depo shot work by 1. suppressing ovulation 2. disabling sperm 3. blocking sperm 4. preventing implantation
- Question #1. What are the significance of GAMETOGENESIS. State whethear it is a developmental phenomena or not, support your answer. Question #2. What are the significance of FERTILIZATION. State whethear it is a developmental phenomena or not, support your answer. Question #3. What are the significance of ORGANOGENESIS. State whethear it is a developmental phenomena or not, support your answer.QUESTION 39 Which of the following is a benefit of sexual reproduction? A. Offspring are genetically identical to the parents. B. Offspring differ genetically from themselves and from their parents. C. There is a possibility of mutations that lead to disease. D. All of the above.Question 20 Which of the following statements regarding nondisjonction is incorrect? 1. could result in gametes with an extra chromosome 2. It occurs only in mitosis . 3. It can occur when sister chromatids do not separate as expected 4. It can occur when homologous chromosomes do not separate as expected
- Question 38 If human gametes were diploid the products of fertilization would have more chromosomes than their parents. the products of fertilization would have fewer chromosomes than their parents. the products of fertilization would have the same number of chromosomes as their parents. the embryo would be diploid. fertilization could not occur. Question 39 Place these cells in order of occurrence for the stages of mitosis. Question 40 List 3 differences between DNA and RNA Question 41 What was the main outcome of Griffith's experiments? Question 42 Which of the following is TRUE about this cell shown below? chromosomes are replicated sister chromatids are separated crossing over has occurred cytokinesis is occurring Question 43 The process of translation occurs in the and the outcome is . Question 44 Which of the following is INCORRECTLY paired? helicase -- unwinds the double helix DNA polymerase -- joins nucleotides to form new DNA strands ligase -- adds new…Question 2 If a certain species has a DNA content of 5 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a diploid cell (from the same species) in mitotic prophase? Explain your reasoning. Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.Question #1. What are the significance of APOPTOSIS. State whethear it is a developmental phenomena or not, support your answer. Question #2. What are the significance of MEIOSIS. State whethear it is a developmental phenomena or not, support your answer.
- Need urgent help with this question. Why do siblings, who share the same parents, look similar but not identical. Refer to the opportunities for genetic variability in meiosis in the explanation. (Grade 11 Bio)IDENTIFICATION (Developmental Biology) Question #1. These are visualized as giant chromosomes and are found in certain dipterans. Question #2. A stage of differentiation when cells undergo irrevocable commitment to certain fate. Question #3. Solid balls of cells.QUESTION 26 One of the cultural preferences driving couples to continue having children in India is ____. a. the preference for female children b. a child benefit paid by the government c. the desire to have both male and female children d. a prohibition against birth control methods e. the preference for male children