explain Three egg types in variegated four-o’clocks.

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 are three notable features between the fertilized and unfertilized egg?

A: Sperms and eggs are the gametes produced by male and female animals respectively in sexual…

Q: How many days does it normally take from the fertilisation of the egg up to birth of the baby?

A: The normal human gestation period is from thirty-seven weeks to forty-two weeks or 259 days to 293…

Q: What are the major events that occur from fertilized egg to birth?

A: Fertilization is the process of fusion of the male gamete (sperm) with the female gamete (ovum) to…

Q: Explain the Human embryo at beginning of fifth week ?

A: The time between conception and birth of a baby is called the gestation period. A normal gestation…

Q: Discuss the different types of eggs based on yolk content and give example.

A: Introduction Reproduction is a biological process in which a parent is responsible for producing…

Q: Relate how toss or flip of a coin and its two possible events to happen every time it goes into the…

A: Sex of the child is determined when the male and female gamete fertilize in the fallopian tube and…

Q: Draw the H. diminuta egg and adult

A: Hymenolepis diminuta is a parasite that causes Hymenolepiasis. It is also known as rat tapeworm. It…

Q: Describe the fertilization process and how an egg prevents fertilization by more than one sperm?

A: The reproductive system of the body is one of the important systems of the human body which ensures…

Q: What experimental evidence demonstrates that molecular gradients in the egg control development?

A: Morphogens:          A substance that standardize a graded distribution and elicit distinct cellular…

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: Differentiate the primitive streak of the 24-hour from the primitive streak of the 18-hour

A: Primitive Streaks and its peculiar shape at various stages--- Primitive streak is very important…

Q: Aquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without…

A: Animals show two types of fertilization that includes external fertilization and internal…

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

A:

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: What would happen if two sperm fertilized the same egg cell? If twosperm fertilized two egg cells?

A: Step 1 Fertilization and implantation is the process of fusion of two types of gametes (spermatozoa…

Q: Draw the H. nana egg and adult

A: H.nana or hymenolepiasis is caused by tape worm or cestode species. It is also called as dwarf tape…

Q: Explain the way in which the egg gets prepared for fertilization during oogenesis.

A: The process through which the male and female gametes combine to create the zygote is known as…

Q: Explain the major developmental events that occur during the embryonic period.

A: Introduction:Embryonic development is an 8-week process and has phases of development during which…

Q: What is developmental mechanism?

A: In biology, a mechanism is a system of causally interrelated elements and processes that result in…

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: 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: Compare and Contrast Gametogony vs. Merogony

A: Apicomplexa is a large group of the obligate intracellular parasite which belongs to the group…

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: Name the mammal who has shortest gestation period.

A: Mammals are vertebrate animals that organize class Mammalia. They have mammary glands which produce…

Q: How many eggs are released by a human ovary in a month? How manyeggs do you think would have been…

A: The ovary is an organ present in the female reproductive system that produces an ovum (egg cell).…

Q: Why is it more difficult to determine the sex of a newlyhatched canary than a newborn puppy?

A: A sex-determination mechanism is a physiological system that controls how an organism's sexual…

Q: Name the process of embryo connecting with uterine wall of mother.

A: Embryonic development is the development of embryo from fertilised egg and its subsequent…

Q: Describe the path of a mature egg that is released and fertilized.

A: An egg is a female gamete and is released by the ovaries. At its release, it is at secondary oocyte…

Q: tabular form, Cite differences between frog and chicken ovary.

A: Ovary, in zoology, female organ within which sex cells (eggs, or ova) are made. Female vertebrates'…

Q: How does von baer's law of development relates with the development of the frog embryo? evidences?

A: Von Baer's laws of development These are rules proposed by Karl Von Baer. The laws demonstrates the…

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: Explain the way in which the yolk amount affects the cleavage. Compare the Cleavage in a sea star…

A: Yolk  Yolk is a nutrient rich part of the egg which support the growth of developing embryo.

Q: If a woman is DdHH, how many different types of eggs can she produce?

A: Homozygous is the genotype of an organism with two identical alleles at a locus. Heterozygous refers…

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: In traditional accounts of fertilization, which characteristics are associated with eggs, and which…

A: The female reproductive cell, or gamete, in most anisogamous species is the egg cell, or ovum…

Q: Name the non identical twins produced by the fertilization of two eggs.

A: Fertilization is a process in which the female gamete is fused with the male gamete. Gamete: they…

Q: development of babies

A: Introduction:- Children grow and develop rapidly in their first five years across the four main…

Q: Toad Starfish Yolk Amount Yolk Distribution Cleavage pattern

A: The distribution and amount of yolk present in the eggs of the animals can determine the cleavage of…

Q: What is indirect development?

A: Development involves the functional and physiological maturation of an individual. It is a…

Q: What is the importance of the pharyngeal pouches in development? Discuss.

A: In embryology, pharyngeal pouch is defines as "any of a series of evaginations of ectoderm on either…

Q: How many egg nuclei will be obtained from 200 megaspore mother cells?

A: Introduction A megaspore mother cell, also known as a megasporocyte, is a diploid cell in plants…

Q: What occurs in the female after fertilization of the egg? What happens if the egg is not fertilized?

A: The menstrual cycle refers to the monthly series of changes that a woman's body undergoes in order…

Q: If a girl started at the age of 14 and continued until the age of 49,calculate the number of eggs…

A: According to the menstrual cycle, A woman has the ability to view let only one egg per menstrual…

Q: It appeared, then, that something in the region of the gray crescent was essential for proper…

A: The amphibian eggs, when divided into two blastomeres along the plane of first division, the cells…