How come the conclusion came to be as half of the son and none of the daughter have precorious puberty? Can you use a cross?

Q: In meiosis, after telophase I, do other cells (comparing one another) have the same combination of…

A: Cell cycle consists of stages of cell growth and reproduction. In M phase of cell cycle, cell…

Q: How is it that in meiosis you can end up with four “daughter cells” that are all genetically…

A: Main purpose of Meiosis is the production of gametes or sex cells. In Meiosis ,four daughter cells…

Q: Your friend is convinced his calico cat is male. He takes the cat to the vet. Sure enough the cat is…

A: A calico cat is a homegrown cat of any variety with a tri-variety coat. The calico cat is generally…

Q: How many of chromosomes do we get from each parent

A: A chromosome is a long DNA molecule that contains part or all of an organism's genetic material.…

Q: In humans, brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and…

A: Genes are the functional unit of heredity. It carries information that is transferred from one…

Q: Progeny Pubescent Genotypes Parents Glabrous Pubescent x 76 79 Glabrous Pubescent x 58 Pubescent…

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

Q: How many types of gametes can be produced by an individual with genotype AaBbCcDdee?  9, 8, 16, 32,…

A: Gametes are produced by the process of meiosis from the parent cell.

Q: Enhance your creativity and critical thinking skills by making your own illustration of the phases…

A: Meiotic division occurs in sex cells when the gametes are to be formed. In this type of division the…

Q: I have a doubt, I'm not sure if the chromosomes are a boy or a girl? Or if the chromosomes have any…

A: Monosomy is an aneuploidy in which only one of a pair of chromosomes is present. When a section of…

Q: Why do you think theheterozygote offspring of two Manx catssurvives with developmental…

A: The Manx cat is a domestic breed of cat, which originated from the Isle of Man. The most…

Q: What condition results from the fusion of a normal gamete (n) and a gamete missing a chromosome (n –…

A: Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly…

Q: Write one (1) short sentence explaining what happens during each pages of ‘Meiosis I’.

A: Meiosis is a type of cell division which exclusively takes place in sexually reproducing organisms…

Q: Having familiarized with the stages of meiosis and the terminologies used to describe this process,…

A: When the nucleus divides during cell division , the two chromatids that make up each chromosome…

Q: Sex-reversed females with XY were found to be missing SRY gene on their Y chromosomes, while…

A: Sex determination in humans is a complex process impacted by the combination of sex chromosomes and…

Q: For a male with a genotype of AaBb Draw a primary spermatocyte which has just entered diakinesis be…

A: Primary spermatocyte : During spermatogenesis the male germ cells called spermatogonial cells divide…

Q: How many different types of gametes can be produced by the genotype DdEeFF?

A: Gametes are reproductive cells that are produced by meiosis. Sperm is the male gamete and egg is the…

Q: According to Figure 2, what is the probability that the next child of couple II.4 and II.5 would…

A: Pedigree is defined as a diagram that will show the lineage of an organism and all the direct and…

Q: The allele for baldness is on the X chromosome only. Can any sons obtain theallele for baldness from…

A: A critical baldness gene is found on the X chromosomes. This suggests that the probability of…

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 male baby is born with the sex-chromosomeconstitution XYY. Both parents have normal sex…

A: The failure of separation of sister chromatids during cell division is termed nondisjunction. In the…

Q: If an albino woman married a normal man, one of whose parents was albino, what would be the chances…

A: Mendelian genetics refers to the principles of inheritance first described by Gregor Mendel in the…

Q: Males are Homozygous O Heterozygous O Hemizygous O None of the above

A: Allele pairs are often termed as to be Homozygous or Heterozygous. An individual having two…

Q: A mouse sperm cells has the genotype a b c d e it fertilizes an egg with the genotype a b c d e a.…

A: The combination of genetic material from a sperm and an egg during fertilization is an important…

Q: The cells produced at the end of Meiosis are not genetically identical. Why is this important?

A: Cell division is an important process that helps to keep the cells growing in number. This enables…

Q: Diagrammatic representation of a test cross?

A: A test cross is used to determine whether the dominant phenotype of an individual is due to…

Q: What does abnormal male karyotype mean?

A: A karyotype is the visual picture of number and morphology of chromosomes. It consists of analyses…

Q: When crossing the mythical one-horned snail (Snaiun) you notice that blue (B) is dominant to…

A: Given: In one-horned snail: Blue - dominant - B and Green - recessive - b Long - dominant - L and…

Q: A child has a genotype AA, what possible combination of parental genotypes could have produced this…

A: Genotype is the appearance of genes of an individual. Each character in the gene is referred as…

Q: What would be the genetic consequences for the gametes and offspring if crossing over occurred…

A: Sexual reproduction ensures diversity in nature. This diversity is mainly achieved due to the…

Q: This combination of sex chromosomes typically produces human males: Xy XX

A: Humans have two sex chromosomes. Sex chromosomes are those which is different from an ordinary…

Q: How many different kinds of gametes will be expected from an individual with the genotype A/A; B/b;…

A: Observable characteristics are basically represented by phenotype when traits are determined…

Q: Amy Alvarez had a recessive X-linked chromosome for a disorder such as, hemophilia, and said that…

A: Amy Alvarez is wrong , she need to more information.

Q: How many types of gametes can be produced by the following type of genotypes? 1.TtRRBBaaDd…

A: The number of gametes created is concluded by the number of heterozygous alleles present in the…

Q: Amy Alvarez had a recessive X-linked chromosome for a disorder such as, hemophilia, and said that…

A: Amy Alvarez has a recessive X linked chromosome disorder.  She is having hemophilia.

Q: Why do females have Barr bodies?

A: The sex chromosomes present in the males differ from the sex chromosomes present in the females. The…

Q: The X and Y chromosome will not be the same size. What are the implications of this with respect to…

A: Most Y chromosomes do not undergo standard recombination. But .there is a single obligatory…

Q: due to an idenpendent assortment what is the posible genetic make up of gametes produced by the…

A: The law of independent assortment was given by Mendel and it is the third law of genetics. It states…

Q: How many types of gametes are produced when linkage is complete and the diploid number is 2? Thank…

A: Diploid gene means a gene having 2 chromosomes, 1 from mother and 1 from father. The gametes from…

Q: Learning Goal: A STR has 4 alleles: A, B, C, and D. A region of DNA containing the STR was amplified…

A: DNA fingerprinting uses gel electrophoresis to distinguish between samples of the genetic material.…

Q: How many possible gametes will the following genotypes produce? List them. ddBB…

A: Gametes are haploid cells formed by the reduction division of germinal cells.

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.