On an island with no large predators, some ducks are born with a mutation that gives them stubby little wings. These ducks can’t fly, but there’s really no need to fly since there are no predators. In fact, they have an advantage because they don’t have to eat as much to support those big wings like the other ducks. Over time, the flightless ducks reproduce better than the regular ducks, and eventually all the regular ducks die out. What characteristic of life is being demonstrated here? Group of answer choices

Q: The Hawaiian Islands were formed as underwater volcanoes that became so tall that they protruded…

A: The volcanoes can also be formed in the middle of a plate where magma rises upward until it erupts…

Q: A researcher performs a tissue transplant experiment with an early Drosophila embryo. The researcher…

A: One of the most crucial elements in ensuring the success of any organ transplantation is ensuring…

Q: Why Don’t Elephants Get Cancer?

A: Cancer or cancer cells are the cells that have lost the capability to follow the normal control.…

Q: What are some of the major impediments to genetically modifying human embryos?

A: Genetic sequences of the organisms regulate their genetic traits.

Q: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

A: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

Q: Woolly mammoths have been extinct for about 4,000 years, but we often find their well-preserved…

A: Using advanced molecular biology techniques, the scientists are making this challenge a reality that…

Q: Can Environmentally Acquired Traits Be Inherited in Mammals?

A: The genetic traits that are encoded by the genome of an organism are transmitted across generations.…

Q: 23

A: This double stranded human DNA model was proposed by JAMES WATSON and FRANCIS CRICK. DNA consists of…

Q: In a genomic comparison between humans and yeast, what geneswould you expect to be similar?

A: Saccharomyces cerevisiae  is otherwise called as bakers yeast. It is an eukaryotic organism with…

Q: An inguinal hernia results from ___ a. testes that move out of the body where they develop like…

A: A hernia is defined as the bulging of organs or tissues through an abnormal opening in the body.…

Q: The total number of genes in human is far less than the previous estimate.Comment?

A: The human genome was the first sequenced vertebrate genome which has revealed a massive amount of…

Q: Compare and contrast the mitochondrial and nuclear genomes. How are they similar, how are they…

A: A genome is an organism's complete set of genetic instruction. Each genome contains all the…

Q: What is the function of a gene (FOXP2) that is rapidly evolving in the human lineage?

A: The FOXP2 gene is responsible for providing the instructions for making a protein known as forkhead…

Q: A carcinogenic compound is placed on the skin of inbred laboratory mice. In many of these mice, skin…

A: A carcinogenic substance is any substance or particle that induces the cancer formation in the host…

Q: 5)Would you expect mutations to always produce recessive traits? Why or why not?

A: Mutations are sudden inheritable variations that occur in an organism's genetic material due to…

Q: What are the modifications that are observed in birds that help them fly?

A: Birds are the group of vertebrate animals. They belong to the class Aves and phylum Chordata. They…

Q: Usually, the mutant alleles studied in Drosophila experiments are recessive because:   A. they are…

A: An allele is called mutant when it differs from the alleles present in normal / wild type…

Q: Why are some lethal recessive mutations such as Tay-Sachs disease not eliminated from a population?

A: Tay Sachs disease is an autosomally inherited disease. Tay-Sachs disease results in a deficiency of…

Q: dinosaurs that have a mutation that causes a decreased ability to withstand temperature changes dues…

A: The mutation is always desirable if it offers any sort of survival advantage. If the mutation…

Q: Cancer cells are a population of cells: 1. That display an increased rate of genetic change over…

A: Cancer is a disease which is caused by the uncontrolled growth of the cells, without regulation of…

Q: Why do different species of animals have different numbers of chromosomes in their cells?

A: Chromosomes are the strands of DNA or genetic material. It is usually linear for macro-organisms and…

Q: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

A: A woman has just been diagnosed with breast cancer. Her doctor tells her that while cancer is a…

Q: Daisy inherits a mutation from her mother that results in the phenotype of red hair. Evegny acquires…

A: Introduction:- The DNA sequence varies from creature to organism. The order of the base pairs can…

Q: Cancer can arise spontaneously, but it can also be induced as a result of environmental factors such…

A: Cancer is a collection of diseases characterized by abnormal and uncontrolled growth. Cancer arises…

Q: Cells from different organism have genes for cytochrome, a protein used in respiration. Which…

A: Cytochromes are the proteins that contain a heme group that contains iron as a central atom which…

Q: How does xenotransplantation improve organ donation for humans due to organ shortages?

A: Xenotransplantation is the process of transplanting organs, tissues, or cells from one species to…

Q: One example of an oncogene is ras. Ras is a G protein that is activated when growth factors bind to…

A: Activating mutations in proto-oncogenes that cause growth. Protooncogenes are the genes which causes…

Q: How are the mammalian Hox genes related to the homeotic genes of Drosophila?  How do the Hox genes…

A: Hox genes are found in bilateral animals including Drosophila and humans. Hox genes are a subset of…

Q: Give a possible explanation for why a mutation in a single gene does not always lead to cancer.

A: Mutation in a gene is defined as any change or alteration in the structure, and hence, function of…

Q: Why do cells have proto-oncogenes? What is their function? Use specific examples in your…

A: A gene is a normal gene found within the cell. There are several proto-oncogenes. everyone is…

Q: The bicoid protein in a larval fly is produced by mRNA that originally came from Group of answer…

A: Bicoid is the first protein that is a morphogen. It is important for the development of Drosophila…

Q: How can two cells with the same genes become different cell types?

A: A cell is the basic key of life that is capable of performing all the functions of life and also…

Q: The Tasmanian devil, a marsupial indigenous to the island of Tasmania (and formerly mainland…

A: The Tasmanian devil, a marsupial indigenous to the island of Tasmania (and formerly mainland…

Q: We are not single celled organisms and multiple cell divisions occur between fertilization and…

A: Introduction :- Gametogenesis as its name suggests , is the process of formation of mature gametes (…

Q: Which of the following observations would support the Darwinian theory for the evolution of cancer…

A: C-Cells isolated from a tumor are all found to have an inactivating mutation in a gene that is…

Q: Scientists have retrieved separately fertilized nonidentical embryos of mice at the 64-cell stage…

A: Chimeras are animals, or in this case humans, that have developed from fused zygotes. This…

Q: Will a mutation in this gene display a defect in the mother with the mutation, or in her offspring…

A: Maternal effect of genetic and phenotypic expression usually determines certain characteristics…

Q: How would an evolutionary biologist EXPLAIN WHY the cancer is more resistant to the immune system…

A: Cancers evolve by the process of mutation and selection at every step from tumor genesis to…

Q: Skin cancer requires a number of mutations, several of which are often caused by the sun in…

A: It is a form of skin cancer that develops in cells known as melanocyte, a cell that produces melanin…

Q: Through the Human Genome Project (HGP), a relatively accuratehuman genome sequence was published…

A: The development of medicines and the distribution of tailored medications are now more likely as a…

Parasitic infections

A parasite is an organism that lives in the body of another organism and obtains food at the expense of the host. There are two kinds of parasites they are internal and external. An internal parasite lives inside another organism and is known as endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite.