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In humans, blue eyes are inherited as a recessive autosomal trait and color blindness is an X-linked recessive trait. A woman with blue eyes and normal color vision whose father was color blind marries a man who also has normal color vision. He has brown eyes, but his mother had blue eyes. Which of the following do you expect to be true for their sons?
One-half of their sons will be color blind and have blue eyes; 1/2 their sons will be color blind and have brown eyes.
One-fourth of their sons will be color blind and have blue eyes, 1/4 of their sons will be color blind and have brown eyes, 1/4 of their sons will have normal color vision and blue eyes, 1/4 of their sons will have normal color vision and brown eyes.
Their sons will all have normal color vision and blue eyes.
Their sons will all have normal color vision and brown eyes.
One-half of their sons will have normal color vision and brown eyes; 1/2 of their sons will have normal color vision and blue eyes.
In some genetically engineered corn plants the dominant gene (D) produces a protein that is lethal to certain insect pests that eat the corn plants. It was found that the pollen could also kill the insect pests. If a corn plant is heterozygous for..
Is a viable count really reflective of the number of bacteria in environment you sampled? For example, if grow bacteria in different dilution factors on a agar plate.
One process that is considered very important to the health of coral reef ecosystems (and that may be currently under stress) is their connectedness to surrounding systems.
A gel electrophoresis of PCR products was ran to test for the presence of genetic modification. The samples were a positive control, a negative control, 5 different fruits, and a control DNA. What is the purpose of the pre-extracted control DNA?
T.J. and Tyler were building a tree-house. While searching for a board in a pile of used lumber, T.J. stepped on a rusty nail that penetrated deep into his foot, causing it to bleed.
Assume that r, red and sc, scarlet, are two recessive eye-color mutations that lie twenty map unites apart on the Drosphila X chromosome, and that each causes a read eye color in place of the wild type purple color.
In parrots, language spoken is determined through one gene, and the allele, N, for Norwegian, is completely dominant to n, Danish.
Most hormones have a basal level of secretion that can increase or decrease based on some condition of change that is detected by endocrine receptor.
XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?
Living diatoms contain brownish plastids. If global warming causes blooms of diatoms in the surface waters of Earth's oceans, how might this be harmful to the animals that build coral reefs?
We sometimes discover nematodes of unknown species in the digestive tract of bluegill that we dissect. Are these worms parasites or commensals?
You have 100 ml each of 400 mg/ml sodium phosphate, 250 mg/ml sodium chloride, and 100 mg/ml potassium nitrate.
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