In humans, the gene for tongue rolling (R) is dominant to non-rolling (r). A man homozygous for rolling marries a woman who cannot roll her tongue. Predict the possible genotypes and phenotypes of their children.

Q: In humans, cystic fibrosis is a recessive genetic disorder that results in mucu clogging major…

A: Cystic fibrosis is a hereditary disease that affects the lungs and digestive system. The body…

Q: Which statement is NOT true? Select an answer and submit. For keyboard navigation, use the up/down…

A: Alleles are the different forms of the same gene.

Q: Suppose that two people having free earlobes start a family. Their first child has free earlobes and…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: A gene is termed when one copy is needed for the trait to be expressed genomic dominant recessive…

A: Answer is dominant gene

Q: There are babies with blood types A, B, AB, and O, waiting to be reunited with their parents.…

A:

Q: An ornage cat has a litter of four kittens: one orange, and three calicos. Assuming a single father…

A:

Q: The gene for white eye colour is present on the X- chromosome in Drosophila, and is a recessive…

A: The gene for white eye color is present on X-chromosome in Drosophila which suggests that the gene…

Q: Hemophilia is an X-linked recessive genetic disorder found in humans. If a male child exhibits…

A: Hemophilia is an uncommon disorder in which the blood does not clot properly due to a deficiency in…

Q: Explain how twins could have the same genetic material but not look exactly the same or have the…

A: The development of twins occurs due to multiple pregnancies. Twins can be categorized into different…

Q: Suppose a maternal effect gene exists as a functional dominantallele and a nonfunctional recessive…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: PKU disease is recessive. A man and a woman are both carriers for PKU disease. Determine the…

A: KU disease is recessive. A man and a woman are both carriers of PKU disease. NormALLELE---------P;…

Q: In humans, color blindness is a sex-linked recessive trait. A female who is a carrier (XBXb) for…

A: The allele for color blindness resides on X chromosome. So, it is a X-linked trait. It is also a…

Q: recessive gene is a gene that produces effects only if a dominant gene is not present. A True False

A: Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of…

Q: than alleles are present for a

A: Allele : It is a variant form of a gene. Some gene have a variety of different forms which are…

Q: Is it possible to determine the genotype of an individual expressing a recessive phenotype? Provide…

A: WHAT IS GENOTYPE Genotype simply means collection of genes in an individual. it is representation of…

Q: Duchennnes’s muscular dystrophy is caused by a rare sex-linked allele and usually

A: Here , Duchennnes’s muscular dystrophy is X-linked recessive disease. Here given that mother's…

Q: A child has blood group O. If the father has blood group A and motherblood group B, work out the…

A: The blood group of people is determined from the genes which are inherited from their parents. A, B,…

Q: If a mutation in a dominant gene occurred during gamete formation which resulted in a new recessive…

A: Alleles are generally defined as the variants of a gene. Based on the alleles present in the genome,…

Q: The human traits described above are said to be controlled by a single gene. Using the character…

A: Ear lobe is a trait which is determined by two Alleles :- E allele and e allele . A) In this , E is…

Q: A. In man, hemophilia, the "bleeder's disease" in which the time required for blood to clot is…

A: Hemophilia is a genetic disorder inherited through the sex-linked recessive X chromosome. It is the…

Q: Distinguish between the following genetic terms: A. gene and allele. B. Homozygous and heterozygous.…

A: Gene: It is a nucleotide arrangement of DNA   example: ATCGATCG Alleles: Alternate forms of a trait,…

Q: A man has six fingers on each hand and six toes on each foot. His wife and their daughter have the…

A: Usually, our phenotypes are controlled by the genes, sometime only one gene can determine the…

Q: A boy is color-blind (X-linked recessive) and has a straight hairline (autosomal recessive). Which…

A: Humans have 23 pairs of chromosomes of which 22 pairs of chromosomes are known as autosomes, while…

Q: What is most likely the woman's genotype?

A: The human blood group system is classified based on the ABO blood group system. Thi is mainly done…

Q: mother has A blood type has a child of B blood type. What are all the possible genotypes of the…

A: Some character is shown when alleles are present in homozygous form(Dominant/ recessive) while some…

Q: In humans, having dimpled cheeks is dominant to non-dimpled cheeks. Isit possible that two dimpled…

A: As dimpled cheeks are dominant,the genotypes are DD and Dd. As the non-dimpled cheeks are…

Q: A man and his wife are both carriers for a recessive disease allele. If the couple has a child,…

A: A recessive disorder can be autosomal or X-linked. In female, phenotypic trait by recessive allele…

Q: A man that can roll his tongue is heterozygous for the trait marries a woman that cannot roll her…

A: The genotype of man will be Rr The genotype of woman will be rr   R r r Rr r r Rr r

Q: Explain the chances that a color-blind woman who is married to a man with normal vision will produce…

A: Let the genotype of color blind woman is XcXc and genotype of normal vision man is XY. We can…

Q: a couple has two children. one has o blood and other has type B.what are the most likely genotype of…

A: A blood group is a classification of blood, based on the presence and absence of antibodies and…

Q: man with male pattern baldness, which is a recessive gene, marries a woman who is a carrier of this…

A: Cross is always done in a punett square. The recessive character is only expressed in humans as…

Q: Having freckles is a dominant trait in humans. A girl has freckles, but her brother does not. What…

A: Correct option is D) FF and ff

Q: what is a genotype and what is a phenotype? Explain how these concepts relate to the concepts of…

A: Genes are the sequence of nucleotide that encode a particular protein.

Q: A woman is color blind (an X-linked, recessive trait).  What are the chances that her sons will be…

A: Given that color blindness is a X linked recessive trait.  X-linked alleles require a specific…

Q: What is the reason for doing a test cross? to determine which allele is dominant to the genotype of…

A: In the field of genetics, a test cross is a genetic cross performed to determine whether an organism…

Q: Suppose a maternal effect gene exists as a functional dominantallele and a nonfunctional recessive…

A: A dominant allele is the one which expresses itself in its homozygous as well as in heterozygous…

Q: Choose a pattern of inheritance (autosomal recessive, X-linked dominant, etc.) and identify a…

A: A genetic disorder is a condition characterized by alterations in the DNA which are passed to the…

Q: People often say that monozygotic twins are genetically identical. Do you think that is a correct…

A: The period from conception to birth is called pregnancy. When an egg is fertilized by a sperm, the…

Q: a couple whose genotype for eye color is bb plans to have a child. What are the possible genotypes…

A: Given brown eyes are dominant over blue eyes. Brown eyes are designated by allele B Blue eyes are…

Q: Which statement describe a dominant trait? S2 and S3 are correct S2 - gene that is not expressed in…

A: Introduction Genes are the functional unit heredity. Gene controls all the characters of a living…

Q: A homozygous individual has what allele(s) of a particular gene? Select one: a. 2 dominant or 2…

A: An allele is described as an alternative form or version of a gene. An individual inherits two…

Q: Two human parents with dimples have children and they all do not have dimples. What are the…

A: A dominant trait is an inherited feature that occurs in an offspring when a dominant allele is…

Q: Because the gene for color blindness is located on the X-chromosome, it is normally impossible for a…

A: Color Blindness is an X-linked recessive disorder. Lets us see which of these options are correct…

Q: A child has blood group O. If the father has blood group A and mother blood group B,work out the…

A: Blood is made up of red blood cells, white blood cells, and platelets in a liquid called plasma. The…

Q: Hemophilia is an X-linked disorder that affects the body’s ability to create blood clots. The allele…

A: According to the question, we have to find out the possible genotypes of the offspring when an…

Q: Select all of the true statements about the offspring. Some offspring have a different combination…

A: Genes are basic units of inheritance. Gene is  a specific sequence of DNA which encodes specific…

Q: An animal has a genotype of two uppercase letters, such as AA. What is this type of genotype called?…

A: The different variations of genes are called alleles. In a diploid organism, there are two alleles…

Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.