Outline how the genes encoding the photoreceptorsevolved through duplication and divergence of anancestral gene.

Q: Describe the effect of primitive streak duplication.

A: The primitive streak :- it is a structure that forms in the blastula during the early stages of…

Q: Define pericentric inversion and paracentric inversion?

A: A chromosome rearrangement that is characterized by the breakage of a single chromosome followed by…

Q: What does the apparent need for dosage compensation mechanismssuggest about the expression of…

A: Dosage compensation is the epigenetic mechanism in which the expression of genes is equalized in…

Q: Which key are helps in identification based on characterstics?

A: A key is a tool which is used in  taxonomy to identify a certain organism. It is one of the most…

Q: What is meant by the archreflex?

A: In order to protect the body from a sudden and harmful stimulus, there has been developed a special…

Q: explain Mapping: Locating Genes Along aChromosome

A: The process of locating genes along the chromosome is more precisely known as gene mapping. This…

Q: What produces position-effect variegation (PEV)?

A: The position effect refers to the alteration of gene expression when its locus is altered within a…

Q: What is the type of geneticinheritance of daltonism? Isdaltonism more frequent inmen or in women?…

A: Color blindness is defined as the inability to see the color or differentiate between colors. Rods…

Q: a. Explain the difference between maternal inheritanceof organelle DNAs and maternal effect…

A: There are two types of sex chromosomes X and Y chromosomes. The autosomes are the same in both male…

Q: Pathways of usher syndrome. Why is it important? What is the function?

A: Usher syndrome is a genetic disorder that is inherited from parents. It is the most prevalent…

Q: Explain how Ac and Ds elements produce variegated corn kernels.

A: The ds (dissociation) factor causes a tendency towards breakage of the chromosome at the site where…

Q: differentiate between Pericentric inversion and Paracentric inversion

A: The variations in the chromosome structure may arise due to the following four processes: 1.…

Q: Regarding albinism, with adavances in fields such as gene therapy and stem cell research, is there a…

A: Introduction :- Albinism is an inherited condition in which the rate of melanin production is…

Q: Correct and rewrite the statement by changing the biological term that is underlined for each…

A: Solution: In the instance of the French biologist Jean-Baptiste Lamarck, his name has been…

Q: A+G G C+T || ||

A: Allan Maxam and Walter Gilbert introduced Maxam–Gilbert sequencing in 1976–1977. The method involves…

Q: Regarding albinism, name and briefly describe diagnostic procedure(s) that can be used to detect the…

A: The term albinism usually refers to oculocutaneous albinism (OCA). It is a set of genetic illnesses…

Q: List the three major classes of segmentation genes and outline the function of each.

A: Segmentation means dividing the embryo into even smaller segments. the specific structures are then…

Q: In roses, the synthesis of red pigment is by two steps ina pathway, as follows:colorless…

A: A mutation in which the protein or enzyme will not be produced is known as null mutation. And if…

Q: What would be the most likely effect of deleting flowering locus D (FLD) in Arabidopsis thaliana?

A: One method of gene regulation is done by histone modification. The histone protein’s tail is…

Q: Explain why the breakpoints of inversions determinewhether they have phenotypic effects

A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…

Q: How can Cri-Du-Chat syndrome be diagnose with karyotyping?

A: Karyotyping is a genome-wide snapshot of an individual's chromosomes. It's a collection of a cells…

Q: Why is decalcification is considered an optional step?

A: The process of eliminating calcium from tissues is known as decalcification. Calcified tissue must…

Q: Suppose a new mutation arises in a mitochondrialgenome. Explain what would have to happen in…

A: Mitochondria is a cell organelle present in every animal cell and is responsible for the generation…

Q: Distinguish between pericentric and paracentric inversions.

A: Inversion is when a piece of a chromosome is broken and it is arranged after inverting it.

Q: Briefly explain a. Ortholog b. B ion c. SILAC

A: Introduction :- ortholog in term of genomic studies is defined as the genes present in different…

Q: Please explain how genetic heterogeneity can result in a child with normal hearing from parents who…

A: Following is an explanation of how two deaf parents can have a child with normal hearing as a result…

Q: Is color blindness genetically transferred?

A: Step 1 Color blindness is a common hereditary condition. It is a deficiency in which the ability to…

Q: Besides CFTR, what othe gene is associated with cystic fibrosis?

A: Introduction Cystic fibrosis:- It is an inherited disorder that causes severe damage to the…

Q: What characteristic property of translocations causesscientists to believe that these rearrangements…

A: The chromosomal translocation is a natural phenomenon in which a chromosomal segment is moved from…

Q: What does position-effect variegation (PEV) reveal?

A: Introduction  Gene expression is basically controlled by various factors such as binding of…

Q: (b) Correct and rewrite the statement by changing the biological term that is underlined for each…

A: The correct statements are as follows -

Q: Define what is meant by a ‘balanced translocation carrier’ and how such an individual might appear…

A: A balanced or chromosomal translocation is a condition where portion of a chromosome has severed and…

Q: QUESTION: Explain the attractions and limitations of the chloroplast genome, compared to the…

A: Introduction In the nucleus of eukaryotic cells, DNA molecules are very long, linear and associated…

Q: How Mutations at the Huntington disease locusare caused?

A: Huntington disease is an inherited rare disease that progressively degenerates the nerve cells…

Q: What causes short stature in Turner syndrome?

A: Answer: Introduction: Turner syndrome (TS) is commonly found chromosomal disorders. It appears…

Q: What is developmental homology?

A: Meaning of  developmental homology   Anatomical similarity due to derivation from a common…

Q: What are similarities between Jacob Syndrome and Patau Syndrome?

A: Jacob Syndrome is a chromosomal aberration caused by the non-disjunction of the Y chromosome. They…

Q: Explain Segment polarity genes?

A: The embryo is known to contain a definite pattern and the gene responsible is known as a…

Q: Differentiate between parental ditype (PD), nonparentalditype (NPD), and tetratype (T).

A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…

Q: Which are the Two of the segment polarity genes?

A: To describe the two of the segment polarity genes

Q: Explain the attractions and limitations of the chloroplast genome, compared to the nucleus, as a…

A: Introduction : Chloroplasts are specific cellular organelles present in plants, with…

Q: Explain the term pleiotropy.

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: Compare and contrast the molecular mechanisms leading to FX syndrome and to FSHMD.

A: Introduction :- A gene originally known as FMR1 gene by scientists and responsible for FXS is…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.