Q: sex determination is based on the inheritance of alleles at one or more loci, in the absence of…
A: In genetics, sex determination is a term used to determine the sexual development of an organism by…
Q: Explain why the inheritance pattern of X-linked traitsdiffers in males and females.
A: Most of the animals show sexual dimorphism, in other words, an individual can be either male or…
Q: The marking process for genomic imprinting initially occursduringa. gametogenesis. c. embryonic…
A: Genomic imprinting basically refers to the phenomenon of gene expression in a…
Q: Explain how twins could have the same genetic material but not look exactly the same or have the…
A: The development of twins occurs due to multiple pregnancies. Twins can be categorized into different…
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: Suppose a maternal effect gene exists as a functional dominantallele and a nonfunctional recessive…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: a. Determine if the pedigree below can be for a trait that is X-linked traits. Write the genotype of…
A: X-linked trait The trait or phenotype that is influenced by X chromosome are know as x linked…
Q: Illustrate the Multiple Allele Inheritance ?
A: Genes are responsible for the genetic traits of organisms.
Q: Why are males more prone to having x-linked recessive disorders? a. Because the y chromosome is…
A:
Q: If a gene is located on the X chromosome of a mammal,it isa. expressed only in females.b. expressed…
A: X-linked recessive traits are expressed more likely in males as they have a single copy of X…
Q: cross a wild female with a male that has white eyes and a tan body. recall from the exercise that…
A: The alleles for eye color and body color are X-linked. Red (W+) eye color (wild) is dominant to…
Q: . Define the term morphogen
A: Morphogen is a substance whose non-uniform distribution governs the pattern of tissue development in…
Q: A gene is termed when two copies are needed for the trait to be expressed
A: Genes are present on chromosomes. Genes control the character of an organism.
Q: If a mutation in a dominant gene occurred during gamete formation which resulted in a new recessive…
A: Alleles are generally defined as the variants of a gene. Based on the alleles present in the genome,…
Q: Explain why Down syndrome is more common in infants born to women older than 35 years of age?
A: A genetic disorder characterized by abnormal cell division in child resulting in extra (whole or…
Q: Explain why X-linked recessive traits are often more common in males but X-linked dominant traits…
A: Humans have two sex chromosomes X and Y in their genome which is responsible for their sex. Males…
Q: Determine the genotype for each phenotype using the Information provided: SQUARE shape (S) is…
A: *Phenotypes means the traits that an individual contains can be easily observable * Ex: colour,…
Q: Describe how genetic divergence and reproductiveisolation are related to each other.
A: The DNA (deoxyribonucleic acid) is the hereditary unit of an organism. It consists of purines and…
Q: Explain why a loss or an excess in genetic material leads to the expression of an abnormal…
A: Each cell in the body has chromosomes, which are stick-shaped organelles in the centre. Each cell…
Q: Explain why X-linked recessive traits are more likely to occur inmales.
A: X-linked inheritance is the inheritance mode in which mutation in a gene on the X chromosome can…
Q: . Describe the phenomenon of double fertilization.
A: Meiosis is a type of cell division (CD) where four gametes or daughter cells are produced as a…
Q: State that traits an organism develops during its own lifetime can be passed on to offspring?
A: The biochemical substances that are carried from the preceding generation to the succeeding…
Q: Explain why X-linked recessive disorders are more common inmales than in females
A: Sex-linked disorders are inherited or passed from one generation to next on sex chromosomes (either…
Q: describe recessive alleles that result in the death of homozygotes prenatally?
A: Genes come in pairs and are responsible for the inheritance and expression of the associated…
Q: Elaborate on the importance of mitotic and meiotic divisions in the transmission of traits
A: Meiosis is the kind of cell division that makes egg and sperm cells. Mitosis is a fundamental cycle.…
Q: Humans have a gene, "T," that is involved in muscle formation of the tongue. Individuals with the…
A: We all know about pedigree analysis. If some male having dominant genotype and their female partner…
Q: Explain about double fertilisation.
A: Nawaschin was the first to show that both male and female gametes are involved in fertilisation in…
Q: Outline the molecular mechanism of sex determination in Drosophila and mammals.
A: Sex determination refers to determining the sex of an individual. The sex of an organism is…
Q: Explain why the incidence of Down syndrome increases with maternal age.
A: Introduction Down syndrome is a genetic condition produced by an additional whole or partial copy of…
Q: Explain how a person with two X chromosomes could come to have DMD using what you know about…
A: Duchenne muscular dystrophy is inherited in an X-linked recessive pattern.
Q: Give two ways nature uses to hide differences between X- and Y-sperm in mammals?
A: Most cells of the mammals contain both an X and a Y chromosome, but in the process of…
Q: Explain why X-linked recessive traits in humans are observed in more males than females.
A: As we know, males are hemizygous for X-connected genes (they have just a single X chromosome), any…
Q: “carrier
A: X-linked inheritance means that the gene causing the trait or the disorder is located on the X…
Q: Suppose a maternal effect gene exists as a functional dominantallele and a nonfunctional recessive…
A: A dominant allele is the one which expresses itself in its homozygous as well as in heterozygous…
Q: Imagine a human trait that is inherited via genetic maternal effect and found on the X chromosome…
A: Introduction: We know that maternal effect or cytoplasmic inheritance is not determined in an…
Q: Describe how X-linked traits are inherited and explain how X-linked inheritance is different from…
A: Inheritance is the process by which the genetic information is passed on from the parent to child.
Q: Explain how independent assortment of chromosomes, crossing over, and random fertilization…
A: Meiosis is the type of cell division which results in the formation of four haploid gametes from one…
Q: Why is meant by sex-linked inheritance? Give few examples in man.
A: Sex linked inheritance is the inheritance of a trait (phenotype) that is determined by a gene…
Q: Determines Sex in Drosophila?
A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…
Q: explain Three egg types in variegated four-o’clocks.
A: Four o clock plant or Mirabilis jalapa refers to the perennial bushy flowering plants. These plants…
Q: Write the name of the term that describes the phrase. Two different alleles of a gene are both…
A: Numerous cells make up an organisms. Cells are the basic building blocks of an organism. Cells also…
Q: State the chromosomal theory of inheritance and explain the effect of linked genes on chromosomal…
A: Chromosome theory of inheritance In 1902 and 1903, Sutton and Boveri proposed this theory. This…
Q: Show the relationship between the incidence of children born with Down syndrome and maternal age ?
A: Genetic Disorders are the type of disorders when DNA abnormality is inherited. Down syndrome is a…
Q: Why lethal allele causes death at an early stage of development?
A:
Q: Elaborate on the significance of mitotic and meiotic divisions in the transmission of traits
A: Mitosis It is the division of chromosomes in a cell. Usually followed by cytokinesis or cell…
Q: Explain some of the ways genes may interact to affect the phenotype and discuss how a single gene…
A: ANSWER: Some of the ways by which genes may interact to affect the phenotype are mentioned below:…
Q: suppose two people who are heterozygous for the ear shape gene mate with each other. What percentage…
A: If two people who are heterozygous for the ear shape gene mate with each other then they produce 25…
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- Fruit fly segmentation begins during oogenesis and is affected by which maternal genes? (Note answers can be multiple or if not given from the option, provided the proper answer) a. Gap genes b. Oskar genes c. Pair-rule genes d. Gurken genesExplain some of the ways genes may interact to affect the phenotype and discuss how a single gene can affect many features of the organism simultaneously.Discuss the genetic determination of sex and the inheritance of X-linked genes in mammals.
- If a gene is located on the X chromosome of a mammal,it isa. expressed only in females.b. expressed only in males.c. sex-linked, with females more likely to show recessive traits.d. sex-linked, with males more likely to show recessive traits.A. How does the structure of a Barr body affect gene expression? B. Color-blindness is an X-linked recessive trait. Heterozygous females are not color blind but they can sometimes have partial color blindness. Explain how this can occur.Explain how X-chromosome inactivation may affect thephenotype of female mammals
- Explain why X-linked recessive traits in humans are observed in more males than females.Explain why the inheritance pattern of X-linked traitsdiffers in males and females.The dosage of X chromosome expression is equalized between male and female mammals. Think about the example of calico cats to answer the following questions. Use Xb to represent the allele for black fur, XB to represent the allele for orange fur. What genotype(s) of female cats is/are expected to have a calico coat? Is it possible to have a calico cat that is male? Explain.