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- The young woman shown at right has albinismvery pale skin, white hair, and pale blue eyes. This phenotype is due to the absence of melanin, which imparts color to the skin, hair, and eyes. It typically is caused by a recessive allele. In the following situations, what are the probable genotypes of the father, the mother, and their children? a. Both parents have normal phenotypes; some of their children are albino and others are not. b. Both parents and all their children are albino. c. The mother is not albino, the father is albino, and one of their four children is albino.Which of the following rows correctly identifies the relationship between the blood type alleles IA, IB, and i? Select one: a. Relationship between IA and IB Relationship between IB and i Incomplete dominance Codominance b. Relationship between IA and IB Relationship between IB and i Multiple alleles Incomplete dominance c. Relationship between IA and IB Relationship between IB and i Dominant and recessive Multiple alleles d. Relationship between IA and IB Relationship between IB and i Codominance Dominant and recessiveExplain the following terms: Heterozygous: Genotype: Phenotype: Dominant allele: Recessive allele:
- Use Punnett Square:The letter that accompanies each trait is representative of the dominant allele. This is the letter you will use when recording the genotypic information for each trait.Read through the descriptions of each trait and determine which phenotype you express. Record your phenotypeNext, determine your genotype. If you express the dominant phenotype, you cannot determine the second allele you carry, so you must list the two possible genotypes. Record this. Question: Eye color (B): Inheritance of eye color is controlled by multiple genes, but people having the homozygous recessive genotype have blue eyes. People who have a dominant allele may have different shades of brown, hazel, or green eyes.Use Punnett Square: The letter that accompanies each trait is representative of the dominant allele. This is the letter you will use when recording the genotypic information for each trait. Read through the descriptions of each trait and determine which phenotype you express. Record your phenotype Next, determine your genotype. If you express the dominant phenotype, you cannot determine the second allele you carry, so you must list the two possible genotypes. Record this. Question Ear lobes (E): Free ear lobes have at least one dominant allele. People with attached earlobes are recessive.Monozygotic (identical) twins share all of the same DNA, yet have differences in appearance and behavior. Explain why this is, using the following terms correctly in your discussion: genotype, phenotype, multifactorial trait.
- If an individual has the dominant phenotype for an x-linked trait, what is/are the possible genotype(s)? if an individual has the recessive phenotype for an x-linked trait, what what is/are the possible genotype(s)? Practice a Punnet square for each of the following autosomal combinations. Assume complete dominance. Determine the genotype and phenotype ratios of the offspring. Genotype ratio = _____GG : _____ Gg: ______gg. Phenotype ratio = _________dominant trait : __________recessive trait. parents with genotypes GG and Gg parents with genotypes Gg and Gg parents with genotypes GG and gg parents with genotypes Gg and gg Practice a Punnet square for each of the following x-linked combinations. Determine the genotype and phenotype ratios of the offspring. Genotype ratio = _____XGXG: _____ XGXg: ______XgXg:_______XGY: _____XgY. Phenotype ratio = _________dominant trait : __________recessive trait. parents with genotypes XGXG and XgY parents with genotypes XGXg and XgY parents with…Show the complete solution including the Punnett Sq. Lina has dimples, freckles, and a widow’s peak. She is a heterozygous for all of the three traits. David, her husband also has freckles and dimples but has a continuous hairline. As freckle is known to be dominant over none, dimples are dominant over no dimples, and widow’s peak is dominant over continuous hairline, identify the Probability that their child will have three recessiveness: no freckle, no dimples, and has widow’s peak; and Probability that their child will have the same phenotype as Lina (with freckles, dimples, and widow’s peak). Legend: Ff – freckles Dd – dimples Ww – widow’s peakWhat is the genotype of a person who has sickle cell disorder and provide a key that identifies what each allele in the genotype represents. (For example, B might represent the normal allele and b might represent the disordered allele) answer can be basic but understandable.
- Use Punnett Square:The letter that accompanies each trait is representative of the dominant allele. This is the letter you will use when recording the genotypic information for each trait.Read through the descriptions of each trait and determine which phenotype you express. Record your phenotypeNext, determine your genotype. If you express the dominant phenotype, you cannot determine the second allele you carry, so you must list the two possible genotypes. Record this. Question: Widow’s Peak (W): A hairline that forms a downward point in the middle of the forehead is caused by a dominant allele. A smooth hairline is caused by a recessive genotype.Please define the following terms: Gene Allele Dominant Recessive Homozygous HeterozygousConsider the following scenario: A man without freckles (freckles are a dominant trait, determined by the dominant allele “F”) is a carrier of cystic fibrosis (recall that CF is a recessive trait, determined by the recessive allele "a"), mates with a woman whose genotype is heterozygous for freckles and is also a carrier of CF. Assume the two genes in question are in different chromosomes and, therefore, assort independently. Complete the following Punnett square to generate the offspring probabilities from this couple, by entering the genotypes of the parents, the gametes, and the offspring for the two traits described above. (4) Father’s genotype ffAa Mother’s genotypeFfAa ● Sperm: fA ● Sperm: fa ● Sperm: fA ● Sperm: fa ● Egg: FA ● Egg: fA ● Egg: Fa ● Egg: fa What is the probability for this couple to have a child with freckles? What is the…
