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A testcross is a way to determine_______ .
a.
Step by step
Solved in 4 steps
- A testcross is a way to determine _________. a. phenotype b. genotype c. both a and bThe symbol "F" in the results of a testcross stands for A)recessive B)filialC)"faulty" or unexpected resultsD)first trait to show upE)dominantA cross occurs between a black homozygous mouse and a white homozygous mouse. They produce gray offspring. What type of dominance is reflected in the scenario above? a. codominance b. incomplete dominance c. complete dominance d. blending of genes
- In an organism of genotype Aa, half the the gametes carry the A allele and half the a allele. this is due to: A dominance B recessiveness C independent assortment D segregationWhy is there no trait (letter) on the y chromosome for males in this pedigree? A. Because the trait is X-linked (on the X chromosome) B. Because Ms. Premo made a mistake C. Because we never write anything on the y chromosomeRed-green color blindness is a recessive trait in humans. The locus is on the X chromosome. If a color blind woman marries a normal vision man, what kind of children could they have? Group of answer choices A. color blind daughters, normal vision sons B. color blind sons, normal vision daughters C. all color blind D. all normal vision
- Two normal-looking fruit flies were crossed, and, in the progeny, there were 202 females and 98 males.a. What is unusual about this result?b. Provide a genetic explanation for this anomaly.c. Provide a test of your hypothesis.A woman who is heterozygous, Bb, has brown eyes; B (brown) isthe dominant allele, and b (blue) is recessive. One of her eyes,however, has a patch of blue color. Give three different explanationsfor how this might have occurred?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 homozygous
- A 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 alleleA pair of contrasting characterscontrolling the same trait is called:A. factors B. lociC. allele D. lineageA series of crosses were performed between pure breeding lines of mice with different coat colours. a) Based on the results of the crosses, describe the type of gene interaction that gives the white phenotype. Explain your reasoning. b) Determine the order of the function.
