During typical earthworm reproduction ( the individual self fertilizes/ monecious individuals exchange sperm/ fertilization occurs during copulation between males and females/ reproduction is by parthenogenesis)?

Q: Fusion of pronuclei occurs during ________.a. spermatogenesisb. ovulationc. fertilizationd.…

A: A pronucleus refers to the haploid nucleus of either the sperm or the egg, both present in the…

Q: Which of the following is NOT true of the female reproductive cycle? a. The entire cycle is 28 days…

A: Female reproductive cycle occurs in every woman as they attain puberty ranging from 12years to so on…

Q: You find two closely related species of fly, one (P) of which appears to reproduce…

A: The reproduction is the process by which new individuals are produced from mother organism and…

Q: Define the terms dioecious and monoecious. Can either of these terms be used to describe a…

A: Reproduction is the biological process by which new individual organisms called offspring are…

Q: What are the organizing effects of sex hormones? Compare the negative feedback loops in the male…

A: Steroid hormones that interact with steroid hormone receptors in vertebrates are known as sex…

Q: Explain why there is a high level of estrogen and progesterone once in every 28-day uterine cycle of…

A: Menstruation is a complicated mechanism that occurs in every female for about 28 days after puberty.…

Q: the vacuole is  important because it is where

A: The vacuoles are membrane-bounded sac-like structures present within the cytoplasm of both the plant…

Q: The production of sperm and egg cells takes place through the process of Select... v asexual…

A: Cell division is the process through which a single cell divides into daughter cells with the…

Q: Give step involves loss of cytoplasm by the spermatids?

A: During the first meiotic division, spermatids result from the primary spermatocytes. It produces a…

Q: define sex reversal in humans

A: Reproduction is a biological process by which an organism reproduces an offspring who is…

Q: Movement of spermatozoa through this component of the male reproductive pathway (6) occurs during…

A: The male reproductive system is located in the pelvic region. It include a pair of testes along with…

Q: Cite three reasons as to why some animals use asexual reproduction.

A: The production of new individuals from a single parent is known as asexual reproduction.…

Q: Which of the following mechanisms best explains the contraceptive effect of birth control pills that…

A: *Preventing pregnancy is done with oral contraceptives (birth control pills). Female sex hormones…

Q: Sexual dimorphism may have evolved due to

A: Sexual dimorphism : It is the condition where two sexes of the same species exhibit different…

Q: How can sperm and eggs meet in such a dilute concentration, and how can sperm be prevented from…

A: The fusion of male and female gametes is called fertilization.

Q: Primary spermatocytes are diploid in number like spermatogonia while spermatocytes are haploid in…

A: The seminiferous tubules are a structure in which spermatocytes are established in the testis.…

Q: A B Q C R. E S• V Which of the following structures of the male and female reproductive systems…

A: Hormones are the chemical messengers secreted by the glands in the body. They play an important role…

Q: During gametogenesis, from a single germ cell (oocyte/spermatocyte), males produce. O4;1 4:4 O1;1…

A: ANSWER) Gametogenesis is the process by which oocytes and spermatocytes produces gametes. More male…

Q: An organism with both male and female sex organs is bisexual hermaphrodite both hermaphrodite and…

A: An organism with both male and female sex organs is?

Q: Describe the structure of a sperm with a diagram.

A: Sperm or spermatozoon is the male reproductive cell (or gamete). They are formed in the seminiferous…

Q: Define the two alternatives of bisexual reproduction-parthenogenesis and hermaphroditism, and give a…

A: Sexual reproduction is the process of creating persons from gametes. The most popular type of sexual…

Q: Contrast the number of sperm that are produced from oneprimary spermatocyte and the number of eggs…

A: Introduction  The life starts from single cell called Zygote. A zygote is formed by the fusion of…

Q: Which of the following events does NOT occur initially during a female reproductive cycle? *…

A: The correct option is A the progesterone promotes the secretory phase Normal vaginal bleeding that…

Q: Describe the way in which the female hormones GnRH, FSH, LH, and oestrogen interact during the…

A: The biological process of reproduction is how a new, unique organism is created from its parents.…

Q: How do the two kinds of mammalian reproductive cycles— estrous and menstrual differ?

A: Fertility is more tightly regulated in the female then males. Female placental mammals have one or…

Q: Create a table that compares spermatogenesis and oogenesis. Include a bit of information about the…

A: Spermatogenesis and Oogenesis are known as the processes of formation of male and female gametes…

Q: If two sperm cells were able to fertilize the same oocyte, how many chromosomes would the zygote…

A: Healthy humans have 46 chromosomes, 23 from the sperm and 23 from the egg. It is widely known that…

Q: Type of asexual reproduction: PARTHENOGENESIS TRANSVERSE FISSION BINARY FISSION BUDDING…

A: TYPES OF ASEXUAL REPRODUCTION                  DESCRIPTIONS          TYPES  OF  ANIMAL/S…

Q: In the female reproduction system The birth canal is also known as the?

A: Humans are sexually reproducing and viviparous organisms. The reproductive stages that happen in…

Q: If one follows 50 primary oocytes in an animal through theirvarious stages of oogenesis, how many…

A: Gametogenesis is a process through which male and female gametes (sperms and eggs) are formed in the…

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: Below are several groups of hormones and structures involved in female reproduction. Which of the…

A: In the female reproductive system there are two main hormone one is estrogen and another is…

Q: Describe how the reproductive structures of each organism are adapted towards the given…

A: The main reproductive structures are the ovaries, testes, and gametangia. Ovaries are found in…

Q: Molluscs are capable of reproducing asexually

A: Mollusks belong to the kingdom animalia and belong to mollusca phylum. They are second largest…

Q: Name 2 types of asexual reproduction, give a brief description and a representative example of each.…

A: According to bartleby expert guidelines, when multiple question are posted we are allowed to answer…

Q: You find two closely related species of fly, one (P) of which appears to reproduce…

A: Closely related species are the group of species that they have very few boundaries.  The…

Q: Define two alternatives to bisexual reproduction—hermaphroditism and parthenogenesis—and offer a…

A: Reproduction is an essential feature of all living organisms. It is the ability of an organism to…

Q: Haploid gametes produced in males are called sperm. O True False

A: Meiosis is the type of cell division in which gamete are formed .

Q: True or false male sea urchins release sperm at the optimal concentration for fertilization

A: There are many challenges for sea urchins in order to fertilizer gametes under water. They undergo…

Q: Which of the following describes the role of Luteinizing hormone in the ovarian cycle? o Inhibits…

A: The hormones are basically secreted from the ductless glands called the endocrine glands. These…

Q: Identify the cell in the list below which is the first haploid cell formed (A) spermatogonium (B)…

A: Spermatogenesis is one process of gametogenesis. Spermatogenesis is the process of formation of…

Q: What is the expected effect on reproduction on an individual with hormone levels shown above?…

A: In pregnancy, the hormone levels can be affected. The main hormones which are needed during…

Q: Draw a neat labelled diagram of a mature human sperm.

A: Anisogamous reproduction is a type of reproduction in which male and female gametes are different in…

Q: In tabular form, Cite the differences of spermatogenesis on grasshopper and rat

A: Introduction: The animal kingdom is characterized by eukaryotic, multicellular animal forms.…

Q: Reproduction is usually secual with both male and female sexes, however asexual reproduction does…

A: Reproduction can be divided into two categories. One of the categories include asexual reproduction.…

Q: trogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light…

A: The menstrual cycle occurs in the uterus and the ovary as a part of making sexual reproduction…

Q: Differentiate histologically the female reproductive organs of the various species: ORGAN Bitch…

A: *Bitch is the female of the canine kind as  dog and wolf and fox. * ovary of Bitch located caudal to…

Q: In sexual differentiation, parts of the male reproductive system develop from the:

A: The formation of different proteins that lead to formation of different cells and thereby tissues…

Q: Describe the three manners in which fertilization of human ovum by sperm can be prevented?

A: In humans, sexual reproduction occurs by the process of fertilization of a haploid sperm with a…