why are certain genes just expressed in the mother and not in the father or vice versa?

Q: How can the same phenotype stem from many different genotypes

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: What are twins?Genetically what are the twotypes of twins that can begenerated?

A: Pregnancy is also termed as gestation during which one or more offspring develop in the uterus of a…

Q: Transmission of information from cells to cell or from parent to progeny that is not encoded in DNA.…

A: Inheritance is the process of transfer of information from parents to offspring via the genetic…

Q: Why is the gene for eye color in drosophila present on the X chromosome ?

A: Gene is the basic unit of heredity for all life forms. It is transferable from one generation to its…

Q: Most mutations in a diploid organism are recessive. Why?

A: To describe: Why most mutations in a diploid organism are recessive.

Q: What is an imprinted gene

A: Imprinted genes are genes that violate the usual rule of inheritance. Their expression is determined…

Q: What is polygenic inheritance? When a gene has more than two alleles When one gene affects more than…

A: DNA is a Genetic store house of an individual organisms. The segment of DNA that can produce a…

Q: What is the relationship between non-disjunction, changes in chromosome number and miscarriage?  Why…

A: Chromosome abnormalities are of 2 types viz. numerical, where an individual has abnormal number of…

Q: Where do we get the two copies we have of every gene?

A: Gene can be defined as the basic structural and functional unit of heredity. Genes consists of DNA.…

Q: How many copies of a gene does the other parent contribute to each of the offspring?

A: Genes are responsible for the expression of traits. If genes have multiple copies, they are referred…

Q: The genes which are located in homologous section of X and Y chromosomes are called------------(A)…

A: A gene is the essential physical and functional unit of heredity. Genes are comprised of DNA. A few…

Q: Why does a loss or an excess in genetic material lead to the expression of an abnormal phenotype?

A: Mutations are changes in the DNA sequence. Mutations can occur as a result of errors in DNA copying…

Q: Which of the following is associated with chemical modifications to chromosomes that label alleles…

A: Humans have a diploid genetic constitution. They contain two alleles for each gene. These alleles…

Q: Why is an X chromosome needed for survival?

A: The sex chromosomes or allosomes are X and Y chromosomes which determine the biological sex of an…

Q: how meiosis and fertilization can result in a trait not expressed in both parents being expressed in…

A: .The process of fusion of male and female gametes in the form of sperms and egg respectively is…

Q: What type of epigenetic change is responsible for genomic imprinting?

A: Epigenetic refers to the patterns of inheritance that involve the alterations in characteristics…

Q: What is the passing of genetic information from one generation to the next

A: The flow of genetic information in cells from DNA to messenger RNA (mRNA) to protein is described by…

Q: Among different species, does extranuclear inheritance always follow a maternal inheritance pattern?…

A: Yes, extranuclear inheritance invariably is contributed by the mother. In many organisms, certain…

Q: Why do extra copies of genes sometimes cause drastic phenotypic effects?

A: The genes are the hereditary unit of an organism which are passed on from the parental generation to…

Q: What evidence indicates that a trait is coded by a dominant allele on an autosome?

A: Answer: AUTOSOMAL DOMINANT =  It is the condition when the trait is expressed by the 22 chromosomes…

Q: If a man has an X-linked recessive disease, can his sons inherit that disease from him? Why or why…

A: The X-linked recessive disease is caused by a mutation in X chromosomes. X and Y are two sex…

Q: How can you distinguish the autosomal dominant and X-linked dominant inheritance patterns from each…

A: Inheritance means the transmission of genetic traits from one family member to another family…

Q: What is the difference between extrachromosomal and delayed chromosomal inheritance?

A: Usually the genes are the hereditary units of life. The genes are present in the nucleus and from…

Q: How is it that asymmetric cell division influences gene regulation? What are the factors that…

A: The mechanism by which a parent cell splits into two or more daughter cells is cell division. As…

Q: A zoologist is studying a deer and found out  that a gene is located on autosome two. This gene…

A: Inheritance is defined as the process of transferring the gene to the offspring from the parent.…

Q: are genes located in the same area as homogoulous cells?

A: The Principle of Independent Assortment states that two or more characters are inherited when the…

Q: What causes Extrachromosomal inheritance?

A: Inheritance or heredity is passing-on one trait form the parents to the progeny by either asexual or…

Q: What role does epigenetics play in inheritance?

A: Epigenetics is the study of how the behaviors and environment can cause changes that affect the way…

Q: What type of epigenetic mark is responsible for genomic imprinting?

A: Epigenetic mark allows genes to switch off or on. These generally change the way genes are…

Q: What is the difference between genetic maternal effect and genomic imprinting?

A: Gene is a fundamental physical and functional unit of heredity. Genetic disorders and all physical…

Q: How is it that genetic abnormalities that include an extra Y chromosome do not have a severe…

A: Genetically all human males normally have a XY chromosome whereas the females have a XX pair. They…

Q: Why are there so few Y-linked traits in humans?

A: The study of genetic variations, heredity, and genes is called genetics.

Q: In some genes, like blood type, two alleles are expressed at the same time. What do we call this?

A: We have mainly 4 types of blood groups- A, B, AB, and O. Each blood group has specific antigens…

Q: What is the difference between a sex-influenced gene and a gene that exhibits genomic imprinting?

A: Introduction  Phenotype of any organisms is basically controlled by genes present in various loci on…

Q: does having different genes cause differences in epigenetic patterns between individuals?

A: While hereditary changes can modify which protein is made, epigenetic changes influence quality…

Q: why some genes assort independently?

A: Genetics is a branch of biology that deals with genes, heredity, and variation. Heredity purely…

Q: Where are most genes in humans located?

A: Genes are the basic biological unit of heredity. They are a segment of deoxyribonucleic acid (DNA)…

Q: Why are X-linked recessive disorders never passedfrom a father to a son?

A: A genetic characteristic or disorder can be handed down from parent to kid via mutations in a gene…

Q: Can males be a carrier of an X-linked recessive trait? How about females?

A: A characteristic that is sex-linked is one in which a gene is situated on a sex chromosome. In…

Q: Why lethal allele causes death at an early stage of development?

A:

Q: What is the unusual phenomenon in which the expression of an allele depends on the parent that…

A: A gene is a unit of genetic material and alleles are the alternative form of genes present on the…

Q: What are X-linked traits?

A: Gene is a functional unit of heredity. A gene is a sequence of nucleotides in genome that codes for…

Q: What is the difference between forward and reversegenetics?

A: The study of genes is known as genetics. Our genes contain information that is passed down from…

Q: Transmission of information from cells to cell or from parent to progeny that is not encoded in DNA.…

A: The DNA or deoxyribonucleic acid contain the genetic information that is transmitted from parents to…

Q: Why does the sex chromosome X carry the gene for eye color in Drosophila?

A: The mode of inheritance is a pattern of obtaining parentral alleles  or genes to the offsprings. The…

Q: What does Germline DNA refers to?

A: Deoxyribonucleic acid (DNA) is the genetic material that carries information from one generation to…