Question

darwins ideas can be broken down into a number of different points. identify each of his ideas from the descriptions below. 1) there are 2 types of worms: worms that eat at night (nocturnal) and worms that eat during the day (diurnal). the birds eat during the day and seem to be eating only the diurnal worms. the nocturnal worms are in their burrows during this time. each spring when the worms reproduce, they have about 500 babies but only 100 of these 500 ever become old enough to reproduce. a. what worm has natural selection selected against? for? b. population has variations. c. in the struggle for survival some variations are favorable. d. more offspring are produced than survive. e. those that survive have favorable traits.

Explanation:

La selección natural actúa sobre las variaciones en una población. Las variantes desfavorables son seleccionadas en contra. En este caso, si las lombrices diurnas son comidas por pájaros durante el día, esta característica (ser diurna) es desfavorable.

Answer:

a. What worm has natural selection selected AGAINST? - Las lombrices diurnas.
b. Population has variations. - Verdadero, hay lombrices diurnas y nocturnas.
c. In the Struggle for Survival some variations are favorable. - Verdadero, la nocturnidad es favorable para evitar ser comidas por pájaros.
d. More offspring are produced than survive. - Verdadero, se producen 500 crías pero solo 100 sobreviven.
e. Those that survive have favorable traits. - Verdadero, las lombrices nocturnas, con la característica favorable de ser activas de noche, sobreviven.