Species Embryo (A-F) Describe the Anatomical Changes from Early to Late Stages Human F Chicken Rabbit Tortoise Salamander B Fish A Guide Questions: 1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physical similarities exist between each of the embryos? 2. Does this suggest an evolutionary relationship? Explain how these embryos can be used as evidence of a common ancestor between each of these six organisms.

Q: Transfer of immunoglobulins from mother to child during breastfeeding can protect the child from dis...

A: Answer Naturally acquired passive immunity

Q: gene is a small section of usually found on a Each gene codes for a sequence of which are joined...

A: this description is all about gene expression. Gene expression means how the information present on ...

Q: The following graph shows the trends in bacteria and viruses after they infect an organism. A B Time...

A: "Microbes on the Move" includes a personal narrative story as well as a few other short stories abou...

Q: How is blood typing for the ABO system and the Rh usually done?

A:  Blood Groups Transfusion or intravenous injection of citrated blood often lead to diasterous result...

Q: Chromosomes are place with short arms pointing upward and long arms downward

A: Introduction: A karyotype is a complete set of metaphase chromosomes, which are sorted by length.

Q: What best describes the hind leg bones seen in the whale? Leg bone Analogous structures to the fins ...

A: Evolution is a steady phenomenon that brings about the transformation of simple life into complex li...

Q: Human cytochrome c and chimpanzee cytochrome c are identical in all 104 amino acids. Our close relat...

A: Human and chimp DNA is so comparable as the two species are so firmly related. People, chimps and bo...

Q: Adult chimpanzees actively teach and guide offspring in learning tool use behaviors.  True or False

A: The answer is True .

Q: Stem cell lines are developed from O multipotent cells O inner cell mass cells from a blastocyst cel...

A: Stem cells are pluripotent cells. They can be preserved for future generation, to store human genes....

Q: How does the immune process that causes hemolytic disease of the newborn take place?

A: Introduction In this question we will discuss about how does the immune process that causes hemolyti...

Q: Write a model describing a situation analogous to that of the LPA model (with cannibal- ism), but su...

A: The LPA model is a three dimensional system of nonlinear difference equations that has found many ap...

Q: Which of the following is NOT an intermediate filament?   A. keratin   B. titan   C. nuclear l...

A: Intermediate filaments:- Intermediate filaments are very stable structures that form the true skelet...

Q: Describe the following phases of the bacterial growth curve and draw them out: a.    Lag phase b.   ...

A: Answer 

Q: disorder that leads to nearsightedness (difficulty seeing things at a distance) is caused by a genet...

A: * given that the disorder nearsightedness is caused by mutation. *On small island of Pacific nearsig...

Q: . at higher doses the animal becomes satiated   b. at higher doses there may be toxic or adverse ...

A: Drug can be either beneficial that is serves the cause of trial or is a failure.

Q: Correlate the lack of efficient repair mechanisms in RNA viruses with the need to be vaccinated for ...

A: Generally RNA virus posses a higher rate of mutation and sometimes it increases upto million folds t...

Q: C. Evidence from embryology Embryology is the study of the development of an organism from an embryo...

A: The development of the embryo is known as embryogenesis. It all starts from fusion of male and femal...

Q: Tigers are much more complex organisms than the single-celled Amoeba dubia, however tigers have a ge...

A: The DNA is the genetic material that is found in the nucleus of eukaryotic cells and cytoplasm of th...

Q: Question:- The speckled warbler is a small, declining, woodland bird that is restricted to intact f...

A: An ecosystem is a natural community of living beings that deals with the external environment and ot...

Q: In the pathway below, normal signalling driving cell division requires a mitogen (ligand), an RTK, R...

A: Mutations are alterations in the DNA sequence of an organism. Small changes, such as adding or remov...

Q: Spermatogenesis is cyclic and exhibits spermatogenic wave inside the seminiferous tubules. Which of ...

A: Spermatogenesis:Spermatogenesis is the development of haploid spermatozoa from germ cells in the tes...

Q: Give the NADH, ATP and FADH production from each part of photosynthesis?

A: "Answer: Plants being living creatures also need food for their survival and by the use of sunlight ...

Q: Why are mutations more likely to occur in repeated DNA sequences? a. These bases are unstable b. ba...

A: Repetitive DNA sequence Repetitive DNA refers to the stretches of DNA that repeat throughout the ge...

Q: Mitosis differs from meiosis in that only mitosis: O is preceded by interphase involves two successi...

A: Introduction: Cell division is the means of reproduction in which all cells need to copy their chrom...

Q: * Evergreen plants A. Multiple Cycles + Monocarpic plants B. Once in life span A Perennial plants C....

A: 22. Monocarpic plants are flowering only once and they die after flowering and fruiting. 23. Certain...

Q: What part of the brain can sometimes be referred to as the “rind” or outer covering? a. thalamus c. ...

A: The nervous framework is the major controlling, administrative, and conveying framework in the body....

Q: Two genes can be right next to each other on a chromosome but get trån rates and times because it de...

A: All organisms are composed of numerous cells. Cells are the functional and the structural units of t...

Q: What are holandric genes?

A: Holandric genes are genes that are found on the Y chromosome that are not homologous to any other ge...

Q: Why do multicellular eukaryotes need to have hundredsof kinase-encoding genes?

A: Gene expression in  eukaryotes are highly responsive to the outer environment.  The large eukaryotic...

Q: The more dangerous type of translocation?

A: Translocation is the process of rearrangement of chromosomes in a out of phase and irregular manner ...

Q: How will you differentiate VDRL from RPR Card test? 2. Give the composition of VDRL reagent and the...

A:

Q: Before the cell undergoes meiosis, it has a total of 40 chromosomes. Which of the following are true...

A: Meiosis Meiosis is a type of cell division in sexually reproducing eukaryotes, resulting in four dau...

Q: Which of the following accurately describes the structure of the DNA molecule? contains four bases a...

A: Introduction :- DNA is the molecular name for the molecule in all living things that conveys genetic...

Q: Is it possible investigate natural paternity, maternity or brotherhood and sisterhood using ABO bloo...

A: Introduction With the use of ABO blood typing, it is only possible to rule out paternity, maternity,...

Q: Neurons and macroglia are similar in that they develop from _______, whereas microglia develop from ...

A: The nervous system is made up of neurons, specialized cells that can receive and transmit chemical o...

Q: b. In cats, long hair is recessive. A true-breeding (homozygous) short-haired male is mated to a lon...

A: A trait is a characteristic that is unique to an individual . According to the question , Trait is L...

Q: Describe the function of these molecules that help control the cell cycle A.) M-phase promoting fact...

A: A) Maturation promoting factor is a cell cycle gatekeeper that controls a cell's transition from the...

Q: How is the genetic determination of sex established in humans?

A: There are 46 chromosomes in the diploid human genome, 44 of which are autosomes and two of which are...

Q: A study of microbial pathogen transport in an aqueous environment is to be studied. The target micro...

A: In normal case, E. coli is normally found in the intestinal tract of human and animals. It is an fac...

Q: 2. Cross a Blue Parakeet (BByy) With a Green Parakeet (BBYY). What is the genotype and phenotype of ...

A: Feather color in parakeets is controlled by two genes. Blue color (B) is dominant over the absence o...

Q: Write if the statement is true and change the underlined word if false. The Miller-Urey experiment ...

A: Introduction 1. The Miller-Urey experiment:- The Miller–Urey experiment was a chemical experiment th...

Q: What are possible  gametes of a heterozygous  round yellow parent  R (red) r (brown) Y (pink) y ( gr...

A: Gamete It is a sex cell, a haploid egg or sperm. It is one of the differentiated cells that is a pro...

Q: Explain the similarities and differences in the cellular structure of Gram-positive and Gram-negativ...

A: Introduction:- Bacteria are a broad category of microscopic, unicellular organisms categorised as pr...

Q: Which of the following explains what will most likely happen to A. fulica? Why?

A: E. rosea quickly becomes the top predator, instead of A. fulica. The number of A. fulica decreases.

Q: Use examples to describe some applications of phylogeny.

A: The study of the classification of living forms is known as systematics. Systematic biology is the s...

Q: QUESTION 44 Which is not a component of Health Related Fitness? O a. Cardiorespiratory Fitness O b. ...

A: Answer  D) Reaction time 

Q: Describe how each of the following physical factors affect microbial growth and aid in classificatio...

A: Microbial growth It is defined as an enhancement in the number of cells of microbes. there are seve...

Q: 1. Which pair of animals in numbers 1-3 belongs to a common ancestral group? Explain your answer. 2...

A: Evolution is process of development of plants and animals over thousands of year from simple to adva...

Q: Describe what a core promoter in and the different types. Describe the motifs that could be found in...

A: Promoters are DNA sequence required to turn off gene or turn on gene.  Promoters are of three types-...

Q: Members of the cactus family in North and South America and of the spurge family in Africa are very ...

A: Cactus belongs to Cactacese family.  Euphorbias also called spurge belongs to Euphorbiacese family. ...

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.