What must be true about the population in order for evolution by natural selection to take place? The population must have a large number of individuals that can reproduce and produce fertile offspring.

The population must have genetic variation that leads to differential survival and reproduction.

The population must have strong individuals capable of fighting off other populations when threatened.

The population must have well camouflaged individuals to avoid being eaten by predators.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set

a. an idea which cannot be disproven!

explanation: