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Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XXYY…

A: The male-determining gene in humans is termed as the sex determining region Y (SRY) gene. Generally…

Q: Familial Down syndrome is similar to primary Down syndrome in that it is caused by trisomy 21.…

A: Two normal copies of 14, two normal copies of 21: A.Two normal copies of 21, one normal copy of 14:…

Q: A color-blind, chromatin-positive male child (one Barr body) has a maternal grandfather who was…

A: Color blindness is an X-linked genetic disorder in which a person is not able to distinguish between…

Q: Please demonstrate the chromosomal basis of principal of segregation in a cell heterozygote (Aa)

A: First, the alleles for a diploid cell are found on homologous chromosomes. In this case, the red…

Q: diploid individual is heterozygous for a chromosome rearrangement. The original chromosome and its…

A: Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms…

Q: Why is the term “crossing-over” appropriate for the exchange of DNA segments between homologous…

A: Crossing over can be defined as the exchange of genetic material that occurs between the non-sister…

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XO with…

A: The male sex-determining gene in human is termed as the sex determining region Y (SRY) gene.…

Q: Explain how it is possible for a person with a translocationor an inversion to be phenotypically…

A: Chromosomes are the condensed packaged structure of the genetic material of an organism. The…

Q: When a female melanotic fly is crossed with a normal male, the progeny are produced: 123 normal…

A: In the question, it is given that the in the F1 generation, the melanotic progeny is only expressed…

Q: 1) Imagine you discover a new mutant strain of tailless mice. Upon looking closer, you notice that I…

A: A test cross is defined as the method to explore the organism's genotype. Thus, it is an…

Q: What is mitotic recombination? A heterozygous individual (Bb)with brown eyes has one eye with a…

A: Mitosis is the process of somatic cell division. The union of the egg and sperm forms the zygote…

Q: How do translocations in which no genetic information is lost or gained produce phenotypic effects?

A: Translocation is caused Due to separation of a chromosome segment and its union to a nonhomologous…

Q: With regard to the segregation of centromeres, why is adjacent-2segregation less frequent than…

A: A specialized DNA sequence of a chromosome which links the two sister chromatids is known as a…

Q: Which of the following can explain the observation that two pureline mutants both showing identical…

A: A mutation is a change in the structure of a gene, the unit of heredity. Genes are made of…

Q: Referring to Figure 17-19, draw a diagram showing the process whereby an inversion formed from…

A: An inversion is a type of chromosomal rearrangement in which a chromosomal segment is reversed end…

Q: What will be the phenotypic ratio for a heterozygous cross between Pp and Pp?

A: An allele is a variant form of a given gene.  Phenotype is the observed physical traits of an…

Q: why why heterozygosity for a deletion can be harmful?

A: Deletion refers to a type of mutation in which the genetic material in a chromosome is deleted or…

Q: A fly that is heterozygous at 3 different, independent, autosomal loci (AaBbCc) is crossed to an…

A: The genotype is defined as the genetic constitution or composition of an individual. Thus, it is the…

Q: Given parental genotype aBc/abC, which of the following gametes is/are recombinant?  Choose all that…

A: Recombination event occurs during the prophase-l of meiosis-l. Meiosis is a cell division process by…

Q: Chromosome Chromosome A has genes ABCD-EFGHIJ B has genes 1234-56789.

A: The Correct Option is B Unbalanced nonreciprocal translocation

Q: Produce a Punnett square to illustrate the dihybrid cross described below: There are two common…

A: A trait is a characteristic feature that is unique to specific individual. It is represented by…

Q: Explain why inversions and reciprocal translocations do not usually cause a phenotypic effect. In a…

A: in this, no addition or removal of genetic material is done there is a relative change in the…

Q: Why must the carrier of a genetic disease be heterozygous?

A: Homozygous means a person carries two identical pair of the gene whereas heterozygous means the…

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XX with…

A: The sex-determining region Y (SRY) is located on the short branch of the Y chromosome, which…

Q: Primary oocytes in females are O dipoid and undergo mitosis O dplcid and undergo meiosis O haploid…

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

Q: what is Unequal crossing-over between duplications ?

A: Crossing over is the process during which the non-sister chromatids of a homologous pair of…

Q: Does mitotic recombination occur in a gamete (sperm or egg cell) or in a somatic cell?

A: Cell division is typically a part of a broader cycle of cells. There are two distinct forms of cell…

Q: If the G locus were 50 or more map units from the centromere, what types and proportions of gametes…

A: Introduction Recombination:- It is a process by which pieces of DNA are broken and recombined to…

Q: what is the significance of chromosomal aberration? what are the different types of chromosomal…

A: Chromosome contains the genetic information of the organism.

Q: What kind of chromosomal mutations is/are produced by unequal crossing over?

A: Mutation refers to both the process of altering a gene or chromosome and the outcome of that…

Q: In a human genetic study, a family with five phenotypicallynormal children was investigated. Two…

A: Introduction: The compact form of DNA is known as chromosomes.

Q: If genes A and B are linked, how would you figure out what would be the expected percentages of…

A: To determine the expected percentages of nonrecombinant and recombinant progeny in a test cross of…

Q: Inversions are known to affect crossing-over. The following homologs have the indicated order (the…

A: Thank you for the question.  Answer : inversion is when there is disruption of a single chromosome (…

Q: Why are people with balanced chromosomal translocations phenotypically normal? Do they suffer from…

A: Chromosomal translocations are genomic events in which either a part or the entire chromosome breaks…

Q: What is Robertsonian translocation Down syndrome?

A: Translocation is a type of chromosomal abnormality in which a chromosome breaks and a portion of it…

Q: How translocation Down syndrome arises?

A: Down’s syndrome is a genetic disorder that occurs mostly in children. It leads to intellectual…

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.