16. Huntington's chorea is a dominant lethal in humans. The disease does not appear until later in life, so that afflicted individuals may already have produced children. What are the F1 genotypic and phenotypic ratios of parents who are homozygous dominant and heterozygous?

Q: 15. A rooster with grey feathers is mated with a hen of the same phenotype. Among their offspring 15…

A: In biology, the term inheritance refers to the transmission of traits from one generation (parents)…

Q: A pure breeding dark blue flowered plant is crossed with a pure breeding white flowered plant and…

A: This is complete dominance as one colour trait is completely dominant over other colour trait.  If…

Q: 7. Use the punnett square to show the dihybrid cross between the two individuals TtAa and ttAa. How…

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

Q: Snapdragon is a flowering plant that does not follow Mendelian rules of inheritance.  If a…

A: Incomplete dominance is when a dominant allele, or form of a gene, does not completely mask the…

Q: 1. Both parents have one dominant allele and one recessive allele. This means that they are…

A: Huntington's disease is a rare genetic condition that causes nerve cells in the brain to decompose…

Q: 7. Construct a Punnett square for a cross between two heterozygous pea plants with violet flower…

A: According to guidelines we have to answer the first 3 sub-parts only. so please kingly post the…

Q: 8. Two rabbits that are heterozygous for grey hair and black eyes are crossed. What are the…

A: In the question given here, both the parents are heterozygous for the traits of Grey Hair and  Black…

Q: 1. 4. 6. Which mode(s) of inheritance could be RULED OUT for this smaller version of the previous…

A: The genes can de be differentiated into autosomal and sex-linked depending on their location. The…

Q: 6. Assuming no crossing over occurs between the Huntington gene and th develop Huntington Disease?…

A:

Q: 1. An individual whose genotype is AABBCC is crossed with an individual who is heterozygous for all…

A: Given that, the genotype AABbCc is crossed with an heterozygous individual (AaBbCc). But you have…

Q: 1. Widow's peak is dominant to no widow's peak. Determine the genotype and phenotype ratios for a…

A: Note : We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: RR x Rr What percentage of the offspring will be round?

A:

Q: 1. Two normal visioned parents have a color-blind son. Give the genotype of both parents and the…

A: Colour blindness is a sex-linked recessive disorder, results in defect in either red or green cone…

Q: sex-linked inheritance? Give 3 examples.

A: Answer Sex-linked inheritance is the appearance of a trait which is due to the presence of an allele…

Q: 1. How do we now call Mendel's hereditary factors? 2. Where are these hereditary factors located? 3.…

A: 1.Mendel new at that time new that the traits are carried by some factors.  They are now called as…

Q: What parental genotype will produce all blood types (A,B,O, & AB) in their four children

A: Blood is fluid connective tissue with plasma which is fluid matrix and it has no fibres. Red blood…

Q: A pure breeding dark blue flowered plant is crossed with a pure breeding white flowered plant and…

A: A pure breeding dark blue flowered plant and a pure breeding white flowered plant are crossed  And…

Q: 5. Patrick met Patti at the dance. Both of them are heterozygous for their pink body color, which is…

A: In the question, we are given with two parents which are heterozygous for pink body color. The pink…

Q: 2. Horniess (H) in cattle is dominant over horned (h). A homozygous hornless bull is mated with a…

A: Traits are characters that can be represented genetically or phenotypically . For this , alleles are…

Q: 6. Which mode of inheritance results in the phenotypes of both a heterozygote and a dominant…

A: Mendel's law of dominance states that in a heterozygote, one trait will conceal the presence of…

Q: 1. A mother with blood type A has a child with blood type O, What is the mother's genotype? 2. A…

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

Q: Normal color vision (XM) is dominant over color blindness (X"). Suppose a color-blind man fathers…

A: Following Mendelian inheritance, the daughters receive one of their X chromosomes from the mother…

Q: 5. Brown eyes are dominant over blue. This is NOT a sex-linked trait. If a blue-eyed colorblind…

A: Find: Brown eyes are dominant over blue. What kind of children they expect. If a son married…

Q: 1. In "Four o' Clock “plants, it's flower color is incompletely dominant. The red flowers are…

A: In incomplete dominance,  A] Genotypic % - 100% pink (Rr) Phenotypic ratio - 100% pink B] Genotypic…

Q: Marfan syndrome is a genetic trait caused by in a dominant allele. The trait causes a weakening of…

A: Marfan syndrome is inherited as autosomal dominant trait. It is a trait present on the non-sex…

Q: 1. An albino man whose parents are both normal marries a woman one whose parents is normal and the…

A: Introduction Albinism is an inherited condition that leads to someone having very light skin, hair,…

Q: 1. How did Mendel control the mating of his pea plants? 2. Using the diagram above, which color…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1. Draw the pedigree for Amita's family and determine the mode of inheritance if any. 2. Explain how…

A: From the given data, it is clear that the disease is autosomal, not sex-linked. As if it was…

Q: 4. An X-linked dominant trait with an unaffected mother and an affected father.

A: X linked dominant  This type of Inheritance refers to the mutations in the genes that are present on…

Q: 4. Show a cross for a sickle cell inheritance of a woman who is homoygous for the disease and a man…

A: Sickle cell anemia is a hereditary illness in the sickle cell disease category. It alters the…

Q: 2Lc) If the woman (phenotypically normal) in question 2(a) married to a color-blind man and already…

A: Colour blindness is X linked inheritance in which defective recessive gene which is known to cause a…

Q: 1. What type of inheritance is this? 2. How many males are affected by this trait?

A: Pedigree : It shows relationship between family members and indicates which individual have certain…

Q: . What is Benji’s blood type phenotype? 2. Could Benji have a type O child? Explain

A: The blood grouping of the patient depends on the blood grouping of both the parents and the dominant…

Q: Woody Guthrie, who wrote This Land is Your Land, was heterozygous for Huntington’s disease (Hh). His…

A: Given   Woody Guthrie - heterozygous for Huntington’s disease (Hh)  His wife - homozygous recessive…

Q: 6. Using a Punnet square, please calculate the probability of having a Aabb offspring in a cross…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 1. In humans, brown eyes (B) are dominant over blue (b). A brown-eyed man marries a blue-eyed woman…

A: Punnet Square: It is a graphical representation of the probable genotypes of an offspring arising…

Q: 4. Two heterozygous black pigs are mated. Show the genotypes, phenotypes, and probabilities of the…

A: (Please note that we can answer 1 question or its 3 sub-parts maximum at a time. Since you ahve…

Q: 1. Red-green colorblindness is caused by a recessive allele (X) at an X-linked gene, and albinism is…

A: The most prevalent type is red-green colour blindness, followed by blue-yellow colour blindness and…

Q: 9. Consider the below Punnett square cross. Explain how you could use it to determine which parent…

A: Punnett square was named after the scientist who discovers it, Reginald C. Punnett, It is a square…

Q: Mr. and Mrs. Jones have six children. Three of them have attached earlobes (recessive) like their…

A: A genetic trait is regulated by genes.

Q: a woman is heterozygous for neurofibromatosis (a dominant disorder) and produces with a homozygous…

A: Neurofibromatosis Neurofibromatosis is a a non cancerous  tumor. The tumor can grow in the nervous…

Q: 4. Jane's father suffers from hemophilia B and her maternal grandfather was colorblind. Her first…

A: Sex -linked recessive inheritance : Most affected individuals are male. Affected males result from…

Q: 1. Please identify the genotypes and phenotypes of offspring produced by the crossing of a rabbit…

A: (According to bartleby guidelines, we are required to answer only the first question in case of…

Q: 1. What is the probability to have white flower if two pink flowers are bred? 2. What are the…

A: The Punnett square is a table that lists all of the possible results of a genetic cross between two…

Q: 1. A allele overshadows the effect of a allele. 2. If only one chromosome carries a dominant allele,…

A: INTRODUCTION Dominant trait The character that is expressed in an individual is called dominant…

Q: 1. Red-green colorbilindness is caused by a recessive allele ) at an X-linked gene, and albinism is…

A: Mendelian factor is the unit of inheritance which passes from parent to offspring through gametes.…

Q: 9. Make the following Punnett square. RrYY x rrYy 16 box square. What are the phenotypic and…

A: Phenotype: It is observable or morphological appearance, for any character for example: tallness or…

Q: 7. In simple terms, describe how crossing over is carried out. How does it generate variability?

A: Introduction : Meiosis is a specific type of cell division that is essential for the production of…

Q: A female (Dd) black dog has three black puppies and one white puppy. 1 What are the possible…

A: Dominant and recessive traits are the two different forms of the gene. The trait which is expressed…

Q: 1. In mice, black fur (B) is dominant over brown fur (b). Breeding a brown mouse and black mouse…

A: When a dominant genotypes is crossed with the recessive phenotype F1 results in all dominant…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.