Red-green color blindness is a sex-linked recessive trait in humans. If a non-carrier female (homozygous for the nonmutant allele) mated with an affected man, what would be the expected outcome(s)?
A. None of the sons would be affected.
B. Half the sons would be color blind.
C. None of the daughters would be affected.
D. None of the offspring (sons or daughters)
would be color blind.
E. Half of the sons would be color blind, and
none of the daughters would be color blind.
D
You might also like to view...
The polynucleotide chain of DNA has polarity: the 5¢ end has a bound ____, while the 3¢ end has a bound ____
a. deoxyribose sugar, ribose sugar b. adenine, thymine c. cytosine, guanine d. hydroxyl group, phosphate group e. phosphate group, hydroxyl group
According to Mendel's law of equal segregation, an Aa monohybrid makes two types of gametes with equal frequency. These two gamete types are:
A) AA and aa B) A and a C) Aa and aa D) AA and Aa
Larrea tridenta is chemically defended against most herbivores and some are able to survive
thousands of years.
Indicate whether the statement is true or false.The steepness of the concentration gradient across the respiratory membrane affects gas exchange, with a steeper gradient ____
a. decreasing the rate of gas exchange b. increasing the rate of gas exchange c. decreasing the levels of carbon dioxide in the blood only d. increasing the levels of hemoglobin-bound oxygen only e. increasing the number of red blood cells