Humans have two different sex chromosomes, X and Y. Figure 4 below shows the inheritance of sex in humans. Figure 4 Mother Father XX XX Y XY XY Copy the diagram into your answer booklet and draw a circle on the part of Figure 4 that shows an egg cell. a) b) What is the genotype of the male offspring? c) A man and a woman have two sons. The woman is pregnant with a third child. What is the chance that this child will also be a boy?

Q: The picture below represents a G1 cell from a newly discovered species that uses the X/Y sex…

A: The cell is in G1 phase and hence it undergoes the S phase to duplicate the DNA. Thus, homologous…

Q: The gene for red-green colour vision is carried on the X chromosome. If the gene is faulty, colour…

A: Homozygous dominant is represented by both capital letters such as TT for tall.Heterozygous dominant…

Q: Technology that can separate X-bearing and Y-bearing sperm offers prospective parents the…

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Q: Hemophilia is a X-linked/sex linked recessive trait in humans. The dominant allele (H) causes normal…

A: Himophilia is the disorder related to blood clotting. it is sex linked recessive disorder. So only…

Q: identify and label the chromosomes number (1-22). also, identify if it is male or female by labeling…

A: Humans have two sets of 23 chromosomes because each person receives two sets, one from their mother…

Q: Which of the following statements is true regarding the inheritance of a human X-linked recessive…

A: A recessive trait is the trait that expresses only when present in 2 copies i.e expresses only when…

Q: heterozygous condition results in a color known as tortoise shell, with both alleles expressed. This…

A: Answers:    In cats, yellow color is due to one allele, and black color is due to another allele.…

Q: A. Give 7 genes located on X chromosomes and provide 2 protein products of each gene. B. Give 4…

A: Question: A. Give 7 genes located on the X chromosome and provide 2 protein products of each gene.…

Q: Mrs. Dee (40 years old) and her husband have an amniocentesis for advanced maternal age. They…

A: The amniocentesis is performed for the genetical analysis of the fetus. It helps in the early…

Q: Imagine a germ cell for an animal that is 2n=4. Gene A and B are found on chromosome one, and the…

A: Meiosis is the cell division process that is responsible for the production of four haploid (n)…

Q: Stephanie conducts an experiment to study sex reversal in a specific grographic location. She…

A: Females are born with two X chromosomes. Female somatic cells are not involved in sexual…

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: A pedigree lists a father as the proband for a genetic disorder that he inherited from his mother.…

A: Inherited disorders are genetic conditions that are passed down from parents to their offspring…

Q: Go: Oh, right. Anyway, biologists define sex as the process of producing gametes by meiosis followed…

A:

Q: Describe how nondisjunction results in aneuploidy disorders, and describe the syndrome/ symptoms/…

A: Nondisjunction means the failure of homologous chromosomes or sister chromatids to separate during…

Q: Which is NOT true about Down syndrome: A) The increased risk of Down Syndrome correlates with the…

A: Genetic disorders can be outlined as the clinical conditions, which occur in the body of an…

Q: Consider a rare disease that is X-linked recessive. A normal man is married to a normal woman with…

A: Genetic disorders related to mutations in genes on the X chromosome are referred to as X-linked…

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: A female has a family history of Duchenne muscular dystrophy, a recessive sex- linked condition that…

A: Since, the disorder is sex linked recessive, we have,  Genotype of affected female - XDXD Genotype…

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

A:

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 woman with no phenotype is known to have a 14:21 translocation. Please answer questions 1 and 2.…

A: Between two acrocentric chromosomes where the centromere is at one end of the…

Q: If the mutation occurred in Jonathan's somatic cells when he was in his 30's, what type of alleles…

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Q: The body cells of chickens have 78 chromosomes in their nuclei. (i) State the number of chromosomes…

A: The indirect process of cell division in which the chromosomes of parent cells divide once, but…

Q: How many Barr bodies in a person with genotype XXXXX? How is the structure of a Barr body different…

A: The mammalian males contain XY chromosome and females contain XX chromosome. So, the number of…

Q: State who the genetic parents are and who the gestational mother is in each of the following cases:…

A: Introduction:- ART (assisted reproductive technologies)are used to give a chance to conceive a child…

Q: Suppose a man with color blindness, an X-linked recessive trait, has children with a woman who is a…

A: The alleles are generally of dominant and recessive type and some other forms like codominant and…

Q: Shown below is a karyotype from a human being. How many total autosomes does this individual have?…

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Q: 13) Use the image below of the X and Y sex chromosomes of a human to answer the following question.…

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Q: You are an allele on a single uncondensed chromosome in a Yellow fever-carrying mosquito (Aedes…

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Q: Why does a single X chromosome cause infertility and other abnormalities in Turner Syndrome…

A: Turner syndrome (TS) is a genetic disorder that mostly affects females. The clinical features of…

Q: A female has a family history of Duchenne muscular dystrophy, a recessive sex- linked condition that…

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Q: Analyze the karyotype shown. Indicate if it is a chromosomal male or achromosomal female. If the…

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Q: What are chromosomal Defects. List and Explain any 5 of them.

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Q: (1) What is the karyotype for men who have an extra Y chromosome? Discuss all the ways you can test…

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.