You perform an in situ hybridization on drosophila melanogaster embryos. you apply a probe labeled with a fluorescent stain that is complementary to mrna transcripts of the gene hunchback. in early stages of embryogenesis you observe fluorescence for the entire anterior half of the embryo only. in embryos at a later stage of development you see the same pattern in the anterior, and also a stripe of fluorescence in the posterior half. what can you conclude about the expression of hunchback from this? group of answer choices hunchback moves from the anterior of the embryo to the posterior during development. hunchback expression is more important in the anterior than in the posterior. hunchback is never expressed in the posterior half of the embryo. hunchback is first expressed in the anterior of the embryo and later in a portion of the posterior. hunchback has been "knocked out" in some portions of the embryo.

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

Quick asap will give brainiest ! what best describes the same pattern of tides on earth throughout the day? neap tides spring tides semidiurnal tides nocturnal tides

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion