The manx mutation, which produces no tail in cats, is a recessive lethal. what phenotype ratios would be expected from a cross between two manx cats? a. ¾ manx: ¼ normalb. ¾ normal: ¼ manxc. ⅔ manx : ⅓ normald. all manx

D

Explanation:

As both parents are Manx cats, their genotypes would be rr. Performing a cross, we know that all the resulting offspring can only have one possible genotype, which is rr, making them Manx cats as well. Hence, all their offspring would be Manx cats.

preservation because he preserves part of the land and preserves means save

explanation:

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.