A particular allele is mice is lethal with homozygous genotype, however heterozygous mice develop normally. Why does this the lethal allele remain the population? *

Q: What is an allele is lethal only under certain conditions?

A: Lethal alleles as the term suggests are the death-causing alleles and occur due to mutation.  The…

Q: Based on what you’ve observed you predict a ratio of 3:1. What are your expected values? (Neon…

A: Mendelian cross is a that involves mating two individuals that are true-breeding having different…

Q: A child with O- blood is born to a mother that has O- blood.  Which of the following paternal…

A: The ABO blood group is contributing by two alleles of a single gene 'i'. The two alleles are iA and…

Q: In fruit flies, the dominant H allele gives rise to a hairless phenotype, hh gives rise to normal…

A: The alleles are the alternative forms of a gene that are located on the same locus of homologous…

Q: sickle cell anemia is due to a recessive allele. in a population of 1000 individuals 35 have sickle…

A: In the absence of disrupting influences, the Hardy-Weinberg equilibrium states that genetic…

Q: What is an example of a lethal allele?

A: Alleles that cause an organism to die are called lethal alleles. The genes which result in viability…

Q: Three linked autosomal loci were studied in Smurfs.  Locus Dominant Allele Recessive Allele…

A: The objective of this question is to determine the order of the loci and the map distances between…

Q: In cardinals, a dominant allele R is required for red feathers (r = colorless). In addition, the…

A: a) What would be the genotype of the F1 progeny? answer: 4:0 (heterozygous dominant)   b) What would…

Q: Sickle Cell Anemia affects blood types in humans and represents what type of relationship compared…

A: Hemoglobin is a protein and this hemoglobin is found in red blood cells that provide oxygen to all…

Q: A research team genotyped hundreds of families affected by haemophilia. Among those families, they…

A: RFLP is found on X chromosome and it is a sex-linked recessive disorder. The daughter who inherited…

Q: Codominance ABO blood typing is an example of codominance, where A and B are both dominant to O. A…

A: In ABO blood typing, the allele IA is dominant over i. Similarly, the allele IB is dominant over i.…

Q: What describes a situation in which an allele's expression depends on the parent from which it was…

A: A gene is present in different forms that are expressed in a phenotype; allele is a one of the…

Q: a vaiety of snapdragon has flowers that can be white, red , yellow, and pink. yellow alleles are…

A: Alleles are two forms of the same gene. For each trait, we have at least one gene and two alleles of…

Q: One important example of multiple alleles is the human ABO blood type. Explain what “multiple…

A: The alleles at the alternative forms of a gene that are located on the same locus of a homologous…

Q: a parent with a B-negative blood type reproduces with a parent with O-negative blood type what is…

A:

Q: The pedigree below is for a rare autosomal recessive trait with complete penetrance. I II IV 1 1 1 2…

A: Pedigree charts are family trees that show the members of a family who have been affected by…

Q: If the i allele (also called Ii) was a homozygous lethal allele during early development, what blood…

A: Allele Each gene may exist in alternative forms known as alleles, which code for different versions…

Q: Coat color in mice is determined by a single gene. The dominant allele of that gene codes for brown…

A: Alleles are the alternative form of a gene that are located on the same locus of homologous…

Q: In mice, yellow fur is dominant to brown fur, and the Yellow allele is a dominant mutation.…

A: A dominant mutation is a genetic mutation that causes a different phenotype when only one copy of…

Q: In mice, the Y locus controls coat color, and the Y allele (yellow) is dominant to y (non-yellow).…

A: In multicellular and other eukaryotic organisms, the genetic makeup of the organism consists of 2…

Q: Guinea pigs have curly or straight hair, where the curly gene is recessive. Guinea pigs can also…

A:

Q: If two alleles of a gene are codominant, and an individual that is homozygous for one allele is…

A: Let P and p are two alleles. These two alleles are Codominant to each other.

Q: This pedigree exhibits a maternal effect. What is the genotype of each individual?

A: Pedigree analysis is useful when identifyig any population when progeny data from several…

Q: For the VWA locus, Sophie has two alleles, 16 & 18. She inherited the allele with 16 copies from…

A: Answer well explained above

Q: In the species Polyfarius obscescens, one gene controls lipid storage. Individuals with the dominant…

A: Storage lipids, also known as triacylglycerols, membrane lipids, which include glycerophospholipids…

Q: Coat color in labradors is determined by alleles of two unlinked genes, B and E. The coat colors…

A: In the given situation, the determination of coat colour in labradors is governed by two independent…

Q: The pedigree chart below indicates that individual I12 has cystic fibrosis. What is the chance that…

A: Cystic Fibrosis is an inheritable chronic disorder, that affects the cells that secrete mucus,…

Q: Some individuals in a canine population is susceptible to disease X, which strikes the adults. The…

A: Mutation–selection balance is an equilibrium within the variety of harmful alleles during a…

Q: Suppose we define the Alzheimer’s disease phenotype as being diagnosed with the disease by age 75…

A: Alzheimer's is a progressive brain disorder. It is irreversible; known to slowly destroy memory and…

Q: In a nursery, four babies had their id bracelets accidentally removed. The blood group from each…

A: The "ABO" blood group system is made up of four blood groups – A, B, AB, and O and is based mostly…

Q: humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh-negative…

A: According to Hardy Weinberg equation p2 + q2 + 2pq =1 and p + q=1 Where, p= frequency of the…

Q: [word1] is the number of individuals with a genotype who manifest a distinct phenotype? 1-Epistasis…

A: The study of heredity and the variation of inherited traits is referred to as genetics. It deals…

Q: In 1-3 sentences each define the following terms:  penetrance, expressivity, karyotype,

A: Chromosomes are defined as the thread-like structures present inside the nucleus of an individual's…

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.