Lucas has one allele for normal blood cells and one allele for sickle-shaped cells. Lucas' blood cell alleles are
a. recessive. c. heterozygous.
b. dominant. d. homozygous.
c
You might also like to view...
When variables A and B are independent, the variance of A - B is equal to
a. the variance of A plus the variance of B. b. the variance of A. c. variance of A minus the variance of B. d. it cannot be determined from the information given here.
Why can't a lack of language be used to fully account for infantile amnesia?
a. Because the "amnesia" includes the inability to recall non-verbal information like faces b. Because language skills do not impact memory abilities, even in adults c. Because mute children (those who never speak) do not display infantile amnesia d. Because mothers who talk to infants are recalled longer than those who don't
American-Indian and Native Alaskan infant mortality rates
a. are lower than for most other American groups b. are about the same as those of Caucasian Americans c. are substantially higher than those of other American groups, except for African Americans d. are largely due to SIDS e. are not related to family income
Which of the following factors has most likely contributed to the increase in American obesity rates?
a. too much high-fat food and too little exercise b. genetic changes over the past few decades c. a lack of willpower among obese people d. the increase in binge-eating disorders