What is the evolutionary significance of parthenogenesis in the class insects?

Q: What is the significance of fertilization and how does it restore diploidy?

A: Fertilization is the process of fusion of haploid male gamete or sperm with a haploid female gamete…

Q: Where are Drosophila melanogaster found?

A: Drosophila belongs to the family Drosophilidae, whose members are commonly called as small fruit…

Q: Which of the following structures secretes the hormone that sustains the corpus luteum during the…

A: Corpus luteum is a temporary endocrine structure involved in ovulation and early pregnancy.  The…

Q: GENESIS: Give the significance of the following: 1. sperm mitochondrial migration:  2. Nucleolar a

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

Q: How is it that the embryo sacs of some apomictic species look normal but contain diploid cells?

A: Apomictic species are the ones that undergo asexual production of a seed from the ovule's maternal…

Q: Give the differences between mammalian and frog oogenesis. OOGENESIS MAMMAL FROG 1.     2.     3.…

A: The difference between the mammalian and amphibian (frog) oogenesis are as follows:

Q: Which sex normally contributes the mitochondrial genes to the offspring?

A: mtDNA (mitochondrial DNA) is found in the mitochondria, cellular organelles inside the eukaryotic…

Q: What are similarities between fish and frog gametes

A: Amphibians( for example frogs )and fishes both share a common aquatic habitat. However frogs can…

Q: What is hypopharynx in cockroach?

A: Cockroaches are of ancient lineage and  have close resemblance with Insects so are known as tropical…

Q: Who discovered Drosophila melanogaster?

A: Drosophila belongs to the family Drosophilidae, whose members are commonly called as small fruit…

Q: In the metagenesis of Aurelia and Obelia what is the form that produces gametes? What is the form…

A: Metagenesis also referred to as alteration of generation, is a phenomenon in which a diploid asexual…

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: What is the difference between parthenogenesis and Parthenocarpy?

A: Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom…

Q: what is the chromosomal system for determining sex in mammals?

A: Chromosomal determination of sex It is also known as allosomic determination of sex and is based on…

Q: With regard to early cleavage in the sea urchin, is the entire zygote involved in early cleavage

A: Introduction:- A sea urchin is a spiny marine creature with a globular body and a radial arrangement…

Q: Where are male gametes produced in flowering plants?   In the anthers   In the testes…

A: The reproductive structures in flowering plants are present in the same individual plant.…

Q: What is the difference between aWhat is the evolutionary significance of parthenogenesis in the…

A: Parthenogenesis is a type of asexual reproduction where the offspring are produced from a female…

Q: What is ejaculatory duct and its function in cockroach?

A: Cockroaches (Periplaneta americana) fall under the phylum Arthropoda of the class Insecta.

Q: What would be the number of chromosome in the spermatids?

A: The thread-like structures present in the nucleus of almost all living cells are termed as…

Q: Can you give an example of species in the Philippines that has been documented to perform…

A: A group of organisms which share the genetic heritage and can interbred as a result of which they…

Q: Why are all parthenogenic parents female?

A: Parthenogenesis is a unique reproduction where the egg develops into an embryo without fertilization…

Q: What is unusual about the cytoplasm during cell divisions that result in spermatids?

A: Spermatid is the haploid male gametid which results from division of secondary spermatocytes.Each…

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: Under what conditions does evolution select for sexualreproduction in C. elegans?

A: Evolution selects for sexual reproduction in C. elegans in the presence of parasites like…

Q: What  similarities  do  the  illustrations  have?  What are the differences?  What trends do you see…

A: Comparing different embryonic stages of different animals is a tool that can be used to infer…

Q: What determines the antero-posterior polarity in vertebrate embryos?

A: The Anterior-Posterior (AP) axis is an embryonic axis that helps the animals to travel…

Q: What are the advantages and disadvantages of the alternation between fertilization and meiosis in…

A: The fusion of female gamete (egg cell) and male gamete (sperm) is termed as fertilization.

Q: What type of gamete is produced by an antheridial head? By an archegonial head?

A: The explanation is given below.

Q: Explain why genetic mutations in asexual organisms lead to much more rapid evolutionary change than…

A: Reproduction is the biological process through which new individual organisms are produced from…

Q: How does the role of meiosis in gamete production differ between organisms with a diploid-dominant…

A: An organic existence cycle (or simply lifestyles cycle or lifecycle) is a sequence of modifications…

Q: Which type of symmetry is associated with cephalization?Why is it important? What is usually…

A: Symmetry, in biology, the repetition of the parts in an animal  in an orderly fashion. Symmetry…

Q: Outline the molecular mechanism of sex determination in Drosophila and mammals.

A: Sex determination refers to determining the sex of an individual. The sex of an organism is…

Q: What is the formula for a female with cri-du-chat syndrome?

A: Cri-du-chat syndrome is a rare chromosomal anomaly. It is considered a rare genetic disease. Females…

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: What is the evolutionary significance of parthenogenesis in the Class Insecta?

A: The development of an egg without fertilization is known as parthenogenesis. It occurs in different…

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: How many chromosomes does Drosophila melanogaster have?

A: Drosophila melanogaster is a species of fly in the family Drosophilidae. Drosophila is commonly…

Q: How does sex determination in Drosophila differ from sex determination in humans?

A: Sex determination is a method for determining the sexual characteristics within an organism. These…

Q: Parthenogenesis is the most common form of asexualreproduction in animals that at other times…

A: Asexual reproduction is a type of reproduction in which offspring are produced without the fusion of…

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: between fish and frog gametes

A: Gametes are the haploid reproductive cells which fuse with each other to form a zygote. Gametes are…

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: What is the difference between sex determination in mammals and in Drosophila?

A: Sex determination is the process of identification of different sex that is male and female, in…

Q: What organ does the somatic hypomere originating from the general mesoderm give rise to?    a.…

A: Somatic hypomere is found to give rise to skeleton of the body, limbs and bony girdles. The mesoderm…

Q: Can you an example of species in the Philippines that has been documented to perform…

A: A group of organisms which share the genetic heritage and can interbred as a result of which they…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.