In humans, XO individuals are females with Turner syndrome and XXY individuals are males with Klinefelter syndrome. Red-green color blindness is caused by an X-linked recessive allele. Suppose a color-blind man and a woman with normal vision and no family history of color blindness had a daughter who was color blind and had Turner syndrome. Which event could have given rise to this offspring? Nondisjunction at meiosis I in the mother Nondisjunction at meiosis II in the mother Nondisjunction at meiosis I in the father Nondisjunction at meiosis II in the father Nondisjunction at either meiosis I or meiosis II in the mother

Q: A heterozygous free-lobed man is mated to a heterozygous free-lobed woman. What are the genotypes…

A: Genotype is the genetic makeup of an organism.  It consists of 2 alleles in an individual.

Q: In the fruit fly Drosophila melanogaster, a recessive condition called eyeless (ey) significantly…

A: First draw all the possible gametes for both the gametes. All gametes means all, including the…

Q: An equational division of mitosis is occuring for a diploid organism that has three heterologous…

A: A fixed position on chromosome which is occupied by single or more genes, is called as Locus.…

Q: In 1-3 sentences each define the follwing terms:  genetic linkage, crossing over, X-inactivation,…

A: The study of the heredity, variations is known as Genetics. The genetics that is related to the…

Q: Duplications and deletions can be detected during meiosis by the presence of extrachromosomal loops…

A: Mutation are the abrupt changes that occur in the DNA sequence resulting in altered phenotype.…

Q: Mendel's laws of segregation and independent assortment are based on the movement of chromosomes…

A: Mendel conducted the experiments on the garden peas. He chose some unique traits of peas and…

Q: In a diploid organism of genotype A/a; B/b: D/d, the allele pairs are all on different chromosome…

A: Anaphase comes after the process of metaphase. In this stage of cell division, chromosomes which are…

Q: Given that the gene for the color-blind condition is recessive and X-linked. You have a female with…

A: Maternal parent has a nondisjunction at Meiosis1 or 2

Q: A parent has the genotype PpLl for two independently assorting genes. What are all the possible…

A: According to Mendel's independent assortment law, the parent who has the genotype PpLl for two…

Q: A dominant allele, XE, carried on the X chromosome causes the formation of faulty tooth enamel,…

A: The genotype of a child is dependant on the genotype of the parents. A dominant allele can manifest…

Q: Proband Sex-linked Brackets Arabic numerals Heterosis III E E Depict the birth order in a generation…

A: An illustration of the biological connections between a creature and its predecessors is called a…

Q: A non-dividing yeti skin cell is shown below. Assuming a single crossover evetn occurs between the…

A:

Q: In an attempt to simplify meiosis for the benefit of stu-dents, mad scientists develop a way of…

A: The cell cycle is a four-stage process in which the cell increase in size (gap 1, or G1, stage),…

Q: Two parents who do not have color blindness have a daughter who has only one X chromosome and is…

A: The event of nondisjunction occurs when the chromosomes fail to separate during the process of…

Q: In the following pedigree, is the disorder’s mode of inheritanceautosomal dominant, autosomal…

A: In this pedigree, affected individuals appear in every generation. There are no carriers shown in…

Q: Table 8.1 shows that Turner syndrome occurs when an individual inherits one X chromosome but lacks a…

A: Chromosomal deletion syndrome occurs when whole or part of chromosomes are missing. Turner Syndrome…

Q: In humans, hemophilia is a recessive trait carried on the X chromosome. Imagine that a couple, Mike…

A: In sexually reproducing organisms the gamete formation occurs by meiosis process that ultimately…

Q: Duchenne muscular dystrophy (DMD), marked by muscular degeneration, results from an X- linked…

A: Duchenne muscular dystrophy is a X- linked inherited disease which is characterized by degeneration…

Q: A couple is planning to have three children. What is the probability of having all boys? *

A:

Q: A color-blind woman with Turner syndrome (XO) has a father who is color blind. Given that the gene…

A: Given that the gene for the color-blind condition is recessive and X-linked and a color-blind woman…

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: A family has an X-linked dominant form of congenital generalizedhypertrichosis (excessive…

A: Genes are the functional unit of DNA. It contains information that is transferred from one…

Q: A phenotypically normal individual has the following combinations of normal and abnormal…

A: Chromosomal deletion is simply deletion of the part of the chromosome. Chromosomal inversion is a…

Q: An equational division of mitosis is occuring for a diploid organism that has three heterologous…

A: The gametes are produced by the process of meiosis. The meiosis is a reductional division.

Q: List the alleles in cach of the gametes crcated at the cnd of meiosis, (Write the number for 2/4…

A: Cell division occurs in all the cells of the body and this process is of two types: Mitosis is the…

Q: erresponding principle developed by Mendel. heterozygous individual [ Choose ] roduces 50% of each…

A: The Mendel's laws of inheritance include law of dominance, law of segregation and law of independent…

Q: An equational division of mitosis is occuring for a diploid organism that has three heterologous…

A: Mitosis is a kind of equational division. It produces the genetically identical daughter cells.

Q: Duchenne Muscular Dystrophy is an X-linked recessive disease. A couple is wanting to have a child.…

A: Duchenne muscular dystrophy is the most common childhood form of the disease; it occurs in one of…

Q: Assume that color blindness is a recessive character on the X chromosome. A man and woman with…

A: Introduction  Inheritance referred to the transmission of character/traits in the form of gene from…

Q: Define nondisjunction and explain how it causes aneuploidy. Name two syndromes resulting from…

A: The chromosome is the package of densely packed chromatin fibers with DNA and histone proteins. In…

Q: An equational division of mitosis is occuring for a diploid organism that has three heterologous…

A: Meiosis is a reduction and division. It produces the duaghter cells with half chromosomes.

Q: If this happens in Meiosis I, it results in two gametes that are n + 1 and two gametes that are n -1

A: The result of a normal mitosis or meiosis is that all the progeny cells receive a complete set of…

Q: The chromosomes in the illustration below are found in a male betta fish and carry the gene for…

A: Mendel proposed the laws of inheritance based on the results of his hybridization experiments. He…

Q: A Calico cat (orange and black striped fur) is born with Klinefelter syndrome (XOXBY) from parents…

A: When a male is born with an extra copy of the X chromosome, he is diagnosed with Klinefelter…

Q: Which phase of meiosis explains Mendel's Law of Segregation? Anaphase I Anaphase I| O Metaphase II O…

A: Answer. Meiosis is a type of cell division that occurs in germ cells that reduces the number of…

Q: In C. elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X…

A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…

Q: Correct Answer: b. 1/8

A: The chances of gamete will only contain chromosome of maternal origin is 1/8 percent

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.