During growth, can a patch of tissue with a white phenotype give rise to a patch with a green phenotype? Explain.

Q: With regard to sister chromatids, which phase of mitosis is theorganization phase, and which is the…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Assume that diploid plant A has a cytoplasm genetically different from that of plant B. To study…

A: The plant will produce by ;

Q: Perform two consecutive crosses between these two plants, GGHH x gghh, question #11. as in

A: DIHYBRID CROSS It is a cross between two different genes that differ in two observed traits. A…

Q: In the absence of SPO11, what meiotic events will be affected during early prophase I?

A: Spo11 protein encoded by gene Spo11 plays an important role in creating double-stranded breaks and…

Q: Why are triploid plants infertile?

A: The plants with three sets of chromosomes called triploid (3n) plants. These plants morphologically…

Q: Why is it impossible to cross a green and an albino plant?

A: Albinism is a result of genetic aberration that causes lack of pigments. In animals due to albinism,…

Q: Why does therecombination frequency ofgenes vary with the distancebetween them in thechromosome?

A: The genetic material exchange between the two homologous chromosomes and that produces recombinant…

Q: A heterozygous diploid yeast Aa Bb went through meiosis. What percentage of the haploid spores will…

A: Recombination is defined as the process or method by which the DNA pieces are broken down and are…

Q: How does Somatic Cell Recombination Can Inactivate Genes in Specific Tissues?

A: Somatic cell recombination is a type of gene rearrangement method in which regions of DNA in a gene…

Q: Why does a loss or an excess in genetic material lead to the expression of an abnormal phenotype?

A: Mutations are changes in the DNA sequence. Mutations can occur as a result of errors in DNA copying…

Q: What are sister chromatids? What is the process that forms two sister chromatids from a single…

A: DNA is the store house of genetic information. This genetic information is decoded through the…

Q: What would the consequences be if one set of sister chromatids failed to separate at anaphase?

A: As we know all living organisms are made of  basic unit of structure and function called as cell. To…

Q: Following X-chromosome inactivation, most of the genes on theinactivated X chromosome are silenced.…

A: Females have two copies of the X chromosome, producing a double dose of X-linked genes. The…

Q: Why dominant negative mutation shows the haploinsufficiency  ?

A: A mutation is a change that occurs in our DNA sequence, either due to mistake when the DNA is copied…

Q: If a cell is deficient of Separase, how would this affect the chromosome dynamic during mitosis and…

A: Separase is a protein that is also referred to as separin. It is an important part of the cohesin…

Q: In a plant which is 2n=24, what is the total number of CHROMATIDS present during prophase I of…

A: The diploid chromosome number is the number of chromosomes inside a cell's core. This number is…

Q: Why is the difference in cohesin cleavage in mitosis and meiosis important for proper segregation in…

A: Two types of cell division is seen in sexually reproducing organisms. They are mitosis and meiosis.…

Q: Are sister chromatid exchanges effective in producing geneticvariability in an individual? in the…

A: As the sister chromatids are known to be genetically identical with the exception of rare new…

Q: Which of the following statements is/are true of the variegated eye color phenotype in Figure…

A: Variegated eye color is a mutant eye color that expresses both red-white mosaic color as a white…

Q: What is loss of heterozygosity and how does this process contribute to the development of cancers?

A: Genetics is a part of science worried about the investigation of genes, genetic variation, and…

Q: What is a sister chromatid? Are sister chromatids genetically similar or identical? Explain

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: ...are individual oval to round cells which bud to form daughter cells?

A: Asexual reproduction is a kind of reproduction which does not result in the fusion of gametes or…

Q: a. Assuming that no cells die, how many cells will there be in one week? b. Assuming that the…

A: Mitosis is the process by which a cell divides into two daughter cells that will possess the same…

Q: In terms of chromosome composition, are the two daughter cells in mitosis identical? Are they…

A: In terms of chromosome composition Mitosis creates two identical daughter cells and each contain the…

Q: The following image shows Nondisjunction. Which of the following cells will suffer from a genetic…

A: Nondisjunction is a failure of chromosomes to separate during cell division. This results in the…

Q: In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

A: Cytoplasmic male sterility is partial or total sterility due to mitochondrial and nuclear…

Q: Describe the process of 'crossing over' detailing at what stage of the cell cycle it occurs. What…

A: Crossing over is also called as recombination or exchange of genes of non sister chromatids.

Q: What marker proteins does BRCA1 directly and indirectly interact with ? Is RAD51 and p53 a marker…

A: The genes BRCA1 and BRCA2 (BReast CAncer genes 1 and 2, respectively) generate proteins that aid in…

Q: When a Pp-genotype plant is bred with a pp-genotype plant, what percentage of the offspring is…

A: Introduction  A gene is consisting of a pair alleles/ factors and can be dominant or recessive.…

Q: Why is Heteroplasmy rare?

A: Heteroplasmy is a condition when the organellar genome present in a cell or an individual is of…

Q: If a cell is deficient of Shugoshin (sgo1), how would this affect the chromosome dynamic during…

A: Introduction Chromosomes are thread-like structures found within the nucleus of both animal and…

Q: What is the name of the specific type of chromosomal abnormality present in the individual plant…

A: One or more of the following causes chromosomal abnormalities: Errors that occur during the division…

Q: How many chromatids are present for each type of chromosome at the completion of crossing over? What…

A: Crossing over is the process in genetics by which the two chromosomes of a homologous pair exchange…

Q: What would be the effect of crossing-over between two sister chromatids?

A: A chromosome has one chromatid before DNA replication.

Q: In Mirabilis jalapa, all three shoot color phenotypes (pale, green, or variegated) are possible in…

A: Uniparental inheritance is a non-mendelian form of heredity in which genotypes are passed down from…

Q: is the same chrosome type of the parent and daughter cells after mitosis an indication that they are…

A: Cell division It is the process through which new cells are produced. It involves two different…

Q: hat cytological abnormalities are expected of aneuploids at mitosis? at meiosis?

A: cervical cytologic abnormalities in teenagers, outlined as a Papanicolaou (Pap) smear result…

Q: What is mitotic nondisjunction?

A: A cell is a basic membrane-bound unit and it is often called the basic building blocks of all living…

Q: What cellular components are involved in the steep decline in the amount of cyclin B when the…

A: Mitosis is defined as the process of duplication of cell or reproduction, during which a single cell…

Q: what forms during crossing over in prophase 1?

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: What is the phenomenonof apical dominance in plants?How can it be artificiallyeliminated?

A: Auxin is a very powerful growth hormone that is produced naturally by plants. They are found in in…

Q: What are two molecular controls that trigger the onset of different stages of the cell cycle?

A: For making the cell cycle in a forward way, there should be activating acyclin and inactivating the…

Q: Assume that diploid plant A has a cytoplasm genetically different from that of plant B. To study…

A: Pollination is the process of transporting pollen from the anther (male part of a flower) to the…

Q: how does colchicine causes euploidy in onion root tip cells?

A: Variations in the number of chromosomes can be of two types as follows. 1. Aneuploidy: It involves…

Q: What is the relationship of cytoplasmic segregation and variegation?

A: Cytoplasmic segregation is defined as the production of two types of descendant cells that is mutant…

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.