Being a ninja is a sex linked recessive trait. What percent of boys will be Ninja if their dad was NOT a ninja and their mom was a carrier? a. 0% b. 25% c. 50% d. 75%
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- A particular person is said to be a carrier of a genetic trait. What does this tell you about their phenotype? (a) They physically show the trait. (b) They physically show the trait more than a noncarrier would show the trait.(c) They are almost normal but show an intermediate phenotype for the trait. (d) They are completely normal and do not physically show the trait.Which statement best describes the reason maternal recessive CYP1A1 polymorphisms of CYP1A1 decrease birth weight in children of smokers? Answer choices (a) It reduces the metabolism of nicotine (b) It increases the metabolism of nicotine (c) It reduces the metabolism of PAHs (d) It increases the metabolism of PAHsGreen coloration is a recessive trait in pea plants. If you crossed a green pea plant with a green pea plant, the offspring could be what genotype? A. Homozygous Dominant B. Green C. Homogygous Recessive D. None of the above.
- A recessive trait will be observed in individuals that are ________ for that trait. a. heterozygous b. homozygous or heterozygous c. homozygous d. diploidAlleles for Tay-Sachs disease are inherited in an autosomal recessive pattern. Why would two parents with a normal phenotype have a child with Tay-Sachs? a. Both parents are homozygous for a Tay-Sachs allele. b. Both parents are heterozygous for a Tay-Sachs allele. c. New mutations gave rise to Tay-Sachs in the child. d. b or cBaldness is a Sex Influenced Trait. A heterozygous bald man and a heterozygous nonbald woman plan to have two kids. What are the phenotypes for their kids? a.If both sons; they will all be bald. b.If both daughters; both will be bald. c.If both daughters; they will all be normal- nonbald. d.If male or female ; Either a bald or normal daughter and either a bald or normal son
- What is Polygenic Inheritance? A) When one gene has many effects B) The additive effect of 2 or more genes C) The genes that cause skin colorHeterozygous is when... Choose the right answer: a.) the alleles are different b.) the alleles are absent c.) the alleles are present d.) the alleles are the sameAn example of a trait that results from a single dominant allele is _____. A.attached earlobes B.cystic fibrosis C.more frequent in its appearance D.polydactyly
- A purebred plant that produces yellow seeds (YY) is crossed with a purebred plant that produces green seeds (yy). The seeds of all of the offspring are yellow. Why? A. The yellow allele is recessive to the green allele. B. All of the offspring are homozygous yellow. C. The alleles are codominant. D. The yellow allele is (completely) dominant to the green allele.if your phenotype is for a dominant trait, such as curly hair, then your genotype is? a: also for curly hairb: for both curly and straight hair c: a complex combination of all hair typesd: unknown, the alleles could be heterozygous or homozygousA man with blood type A and a woman of blood type B have a baby girl of blood type O. The man sues his wife for divorce, on the grounds that it is not possible for the baby to be theirs (since the blood type is not A, B. or AB). Evaluate the lawsuit on the basis of genetics (A, B alleles are co-dominant over the recessive O allele). IA = A allele IB = B allele iO = O allele
