Q: What is Biparental inheritance?
A: Genes carry coded genetic information in the form of specific nucleotide sequences. This specific…
Q: Explain Bicoid is the anterior morphogen?
A: Introduction Bicoid: it is a protein product of maternal effect gene commonly found in flies such…
Q: What is crossing over, when does it occur, and what is its significance
A: Genes located close together on the same chromosome are transmitted as a single unit to the daughter…
Q: What environmental factors may increase incidence of chromosomal abnormalities? Name at least three.
A: Chromosomal abnormalities or aberration is defined as the defect in the structure or the number…
Q: What generates the first differences among cells in an early embryo? And what controls the…
A: Embryonic differentiation refers to the process in which embryonic cells possess specialization and…
Q: What is the geneticcondition in which theheterozygous individual hasdifferent phenotype from…
A: Inheritance patterns are of different type’s Mendelian inheritance, incomplete dominance,…
Q: How do monocilia function in development?
A: Renal epithelial can be defined as the single layer of cells that will lining the nephron. Renal…
Q: The marking process for genomic imprinting initially occursduringa. gametogenesis. c. embryonic…
A: Genomic imprinting basically refers to the phenomenon of gene expression in a…
Q: What does post covid syndrome mean?
A: Covid 19, or coronavirus disease which was discovered in 2019 in the Wuhan district in china. From…
Q: With regard to development, what are the roles of the maternaleffect genes versus the zygotic genes?…
A: Maternal-effect is a phenomenon in which the phenotype of the offspring is defined by the genotype…
Q: Describe the periods of prenatal development?
A: Embryology is the study of development and growth of fertilized eggs(zygote) into mature embryos.…
Q: What are the periods of the second meiotic division?
A: Meiosis is the reduction division type of cell division in which the original number of chromosome…
Q: Concerning the sexchromosomes of the XYsystem which type of gametedo the male and the…
A: Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each…
Q: Differentiate between indirect and direct development.
A: Step 1 Development is a series of changes that occur during the formation of a mature individual…
Q: how can I Identify the source (mechanism) and types of increased mutations in older mother oocytes…
A: Delayed parenthood has increasingly adverse effects on reproduction. In an older male, sperm quality…
Q: causes a deletion to occur during early fetal development.? is it an alteration
A: If there is deletion or Insertion of one or a few nucleotides in the DNA molecule, then it will…
Q: How is cell death a normal part of development?
A: Answer: Introduction: Cell death is necessary for the normal development of eukaryotic organisms and…
Q: If a mother snail is heterozygous, Dd, which gene products will the oocyte receive?
A: The mom's genotype specifically influences her offspring's phenotype Broken rule: gene expression an…
Q: What role does induction play in development?
A: Induction is the developmental process by which specific tissue types affect the development of…
Q: What is extranuclear inheritance? Describe three examples
A: DNA is the genetic material found in all prokaryotic and eukaryotic cells. DNA is double stranded…
Q: Explain the male-specific region of the Y (MSY) ?
A: Introduction A normal human diploid cell contains 23 pairs of the chromosomes. Out of these 23…
Q: What are the distinguishable parts of the 72-hour chick embryo? Give at least 5 parts and the adult…
A: Probably the best magical occurrence of nature is the change of the egg into the chick. A chick…
Q: what is celluar cleavage thats occur in the early stages of development?
A: The development of an embryo is characterized by the process of cell division and cellular…
Q: How do fruit fly maternal effect genes determine thepolarity of the egg and the embryo?
A: Drosophila melanogaster is generally known as the common fruit fly. It belongs to the family…
Q: are genes located in the same area as homogoulous cells?
A: The Principle of Independent Assortment states that two or more characters are inherited when the…
Q: Do the genes of the X and Ychromosomes determine onlysex characteristics?
A: The human cell contains 23 pairs of chromosomes. The first twenty three pairs of chromosomes are the…
Q: What is the difference between direct and indirect development?
A: Development refer to the process of the formation of the adults from the progeny stage. There are…
Q: What happens when Wnt4 genes are activated? What gonads developed?
A: Wnt4 proteins are encoded by Wnt genes which are present on chromosome number 1. Presence of Wnt4…
Q: Explain mRNA and protein products of maternal effect genes within the early embryo?
A: Embryonic development refers to the development and formation of the embryo. It is characterized…
Q: What is the cause of aneuploidy?
A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…
Q: What causes Biparental inheritance?
A: Extranuclear inheritance is also known as cytoplasmic inheritance. It is the transmission of genes…
Q: How are genes turned on and off in embryological development?
A: One way cells regulate their genes is by DNA methylation, in which a molecule known as a methyl…
Q: Which of the phases of XCI occurs in anadult female?
A: X chromosome inactivation is a gene silencing program on one of the X chromosomes in females. This…
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: What are the characteristics of the cleavage embryo?
A: Answer : Cleavage is the mitotic division in which the daughter cells are formed from the parent…
Q: Why does aneuploidy increase with maternal age?
A: A normal human cell has 46 chromosomes. Aneuploidy is a condition when a human cell has an abnormal…
Q: describe Mechanisms leading to maternal inheritance oforganelles
A: A form of inheritance in which the traits of the offspring are maternal in origin due to the…
Q: What is indirect development?
A: Development involves the functional and physiological maturation of an individual. It is a…
Q: Does the distribution of Ca21 in an egg correlatewith formation of the fertilization envelope?
A: Calcium plays a very significant role in several life processes that takes place within the body of…
Q: How does distribution of the gray crescent affectthe developmental potential of the first two…
A: Introduction: Gray crescent is a cortical region present in the egg of the frog that is recently…
Q: What does Germline DNA refers to?
A: Deoxyribonucleic acid (DNA) is the genetic material that carries information from one generation to…
Q: If the HoxA3 and HoxD3 genesare equivalent, how do you suppose they can play suchdistinct roles in…
A: Gene is the structural and functional unit in the DNA. Genes are composed of nucleotide nitrogenous…
Q: Does a PP individual produce more of the protein encodedby the P gene than is necessary for the…
A: When a gene interferes with the expression of another gene that means the expression of one gene is…
Q: Why are the marks of imprinted genes erased and reset during gamete formation?
A: Genomic imprinting is a phenomena which controls the gene expression involved in the embryonic…
At which stage of development does XCI initially occur?
Step by step
Solved in 2 steps
- Which three factors are crucial in the diagnosis of genetic defects in the fetal stage? What do you think weighs the most?How can epistasis explain incomplete penetrance?With regard to development, what are the roles of the maternaleffect genes versus the zygotic genes? Which types of genes are needed earlier in the development process?