In humans, the allele n causes an abnormal shape of the patella in the knee (n is the normal allele). a separate gene is concerned with finger length the allele b causes abnormally short fingers, whereas b gives normal length. a study focused on people who have abnormal patellae and short fingers (n/n. b/b in genotype), having inherited the n allele from one parent and the b allele from the other parent. these n/n. b/b people mated with normal spouses producing 40 progeny, classified as follows:
normal 3
abnormal knees and fingers 2
abnormal knees only 17
abnormal fingers only 18
what ratios of parental and recombinant phenotypes would you expect if these genes are linked? unlinked?
use a chi-square test to check if the genes are linked. if they are, provide a map distance for these two genes.

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Nhumans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? in humans, abo blood types refer to glycoproteins in the membranes of red blood cells. there are three alleles for this autosomal gene: ia, ib, and i. the ia allele codes for the a glycoprotein, the ib allele codes for the b glycoprotein, and the i allele doesn't code for any membrane glycoprotein. ia and ib are codominant, and i is recessive to both ia and ib. people with type a blood have the genotypes iaia or iai, people with type b blood are ibib or ibi, people with type ab blood are iaib, and people with type o blood are ii. if a woman with type ab blood marries a man with type o blood, which of the following blood types could their children possibly have? a, b, ab, and o ab and o a, b, and o a and b

Donde se encuentra el adn nuclear en un organismo eucariota?