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

Q: Cross 1: Purple Stem (P1) x Brown Stem (P2) = F1 Generation (all purple stem plants). Cross 2: F1 x…

A: Monohybrid cross looks at one single trait in an animal or plant and the Punnett square made from…

Q: The BCRA-1 allele is associated with very high risk of breast and ovarian cancers. Is this allele…

A: The mutation accumulation (MA) theory describes that if harmful or deleterious mutations are…

Q: A yeast proline, histidine auxotroph is mated with a prototroph and the diploid cell is sporulated.…

A: Mendel’s laws of inheritance are applicable to sexually reproducing eukaryotic organisms. Mendel…

Q: Among the following patterns, which is likely to represent the phenomenon of senescence? Please note…

A: We can say that Senescence is the process by which a cell aged and stop dividing any further. This…

Q: cell is aneuploid, do you expect it to express a higher or lower level of the proteins encoded on…

A: Normally the cells are euploid which means that they are exact multiple of the haploid number.…

Q: Describe some of the key features of cytoplasmic inheritance. Why do traits that are inherited in…

A: Answer :  Key features of cytoplasmic inheritance :   Cytoplasmic inheritance from mother side…

Q: A condition known as icthyosis hystrix gravior appeared in a boy in the early eighteenth century.…

A: It passes from father to son and not from father to daughter.

Q: Define the Random Monoallelic Expression: Inactivation of the X Chromosome ?

A: They were discovered in 1876. These are the tertiary structures of DNA (deoxyribonucleic acid)…

Q: In zucchinis there are two genes controlling flower colour. One gene determines if pigment is…

A: The gene controlling for the pigmentation is the Pp gene . Where allele for pigmentation is dominant…

Q: In considering the formation of the A–P and D–V axes in Drosophila, we noted that, for mutations…

A: Maternal effect genes are the ones that are contributed to the egg by females.

Q: In McCune-Albright syndrome, fibrous connective tissue replaces bone, tan patches (café-au-lait…

A: A mutation is considered a change in the DNA sequence, which can be either an addition or deletion…

Q: A single yeast cell placed on a solid agar will dividemitotically to produce a colony of about…

A: Cell division is a natural process in which a parent cell divides into two daughter cells. Cell…

Q: You are studying a plant with tissue comprising both green and white sectors. You wish to decide…

A: Variegation in plants refers to a phenomenon that produces plants with different colours on their…

Q: Hair color is due to the presence of melanin. There are two types of melanin produced by…

A: Introduction Melanocytes are skin and eye cells that create and store the pigment melanin.…

Q: The slipper orchid is a highly prized flower that undergoes self-fertilization. You own a slipper…

A: Need to find the genotype of slipper orchids offspring. The parent genotype is Aabb and involves…

Q: chromosome of genotype   C D recombines with a homolog of genotype   c d during meiosis when Spo11…

A: * Given that chromosome of genotype  "CD"  recombines with a homologous of genotype  "cd" during…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: hoose which of the following is true: a) Haploid cells have one allele per gene b) Haploid cells…

A: DNA is the genetic material present in most of the living organisms. The DNA is made up of 4…

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: The dominant condition elliptocytosis causes red blood cells to become misshapen into oval-shaped…

A: answer given below

Q: Explain what detrmine that  inversions  have phenotypic effects

A: Chromosomal rearrangements are the mutations in chromosomes that alter the structures of individual…

Q: The Yellow Fever vector mosquito (Aedes Aegypti) is normally 2n = 8. Please draw the following…

A: The 8- 8-chromosome mosquito Aedes aegypti is the subject of this analysis, which focuses on two…

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: An individual has a deletion of part of the short arm of chromosome 5.  This individual also has a…

A: A chromosome is a DNA molecule and part of genetic material.

Q: Suppose that you are studying the role of Protein B, which you believe plays a role in regulating…

A: Apoptosis which is also known as programmed cell death, is defined as a mechanism that will allow…

Q: What is a Barr body? How is its structure different from that ofother chromosomes in the cell? How…

A: Chromosomes are the carrier of genetic material deoxyribonucleic acid (DNA). They are coiled in…

Q: Two morphotypes of the newly discovered plant in Mt. Banahaw de Lucban were tested for linkage of…

A: Introduction: The most advancing branch of science is genetics. The study of genetics comprises…

Q: If in an offspring there is a "zigzag" segregation for the [y] mutant phenotype (recessive mutation)…

A: Zigzag segregation is a phenomenon in which genetic material is passed on in an irregular or zigzag…

Q: How can you tell if an individual is heterozygous for the D1S80 marker?

A: The term heterozygous variant belongs to a subdivision of biology, genetics. Genetics is the study…

Q: Among the following patterns, which is likely to represent the phenomenon of senescence? Please note…

A: None of the above.

Q: he propensity to develop retinal cancer can run in pedigrees of certain families. You have learned…

A: Tumor suppressor genes are important cancer prevention genes since a partial or total inactivation…

Q: Consult Figure 1, which shows a human karyotype with chromosomes arranged in order of decreasing…

A: Eukaryotes usually have their genetic material packed and condensed into chromosomes and stored…

Q: What is the meaning of term haploinsufficiency?

A: The gene is the basic physical and functional unit of heredity. Genes are made up of…

Q: Suppose that you are studying the role of Protein B, which you believe plays a role in regulating…

A: Apoptosis is a process of programmed cell death that occurs in multicellular organisms. It is a…

Q: can two observably different cells have the same geno type, explain?

A: In biology, the genotype is the set of genes in our DNA which is responsible for a particular trait.…

Q: determining coat color is the agouti gene?

A: The coloration, pattern, and length of the cat fur is governed by numerous genes and is determined…

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.