Sexual reproduction evolved multiple times in various groups of organisms. sexualmost always involved meiosis followed by gamete release and fertilization. what explains why the phenomenon of sexual reproduction was under selective pressure to evolve multiple times in groups of organisms?
a)
sexual reproduction produces more offspring in one event than asexual reproduction. greater numbers of offspring is a survival advantage.

b)
sexual reproduction requires less energy expenditure on the part of the organisms and thus provides a better allocation of resources for the sexually reproducing individual.

c)
sexual reproduction produces genetically diverse offspring. genetically diverse populations are more resilient to environmental disturbance and are less likely to go extinct.

d)
sexual reproduction limits the genetic variation in a population, providing for a mechanism to create genetically stable offspring. these offspring are more likely to survive.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.

Complete the statements to identify the first two steps of meiosis i. (1 ) the first and longest step of meiosis i is called i. (2)the second step of meiosis i is called i.