Some methods of contraception, such as birth control pills and patches, use synthetic hormones to manipulate the ovarian cycle in females. some hormone-based contraceptives contain a combination of a synthetic estradiol and a synthetic progestin (progesterone-like hormone. other hormone-based contraceptives contain progestin only. which statements correctly explain how the hormone-based contraceptives affect the female reproductive cycle?

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Which image shows labeled organelles that are present only in plant cells?

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.