3. This living sea star and tossi sea urchin both have body structures that paris are formed along five lines. What best explains why both species have this
five-lined body structure?"
sea star
fossil sea urchin
The sea star and sea urchin are different species, so they must not share an ancestor
population. They must have inherited this five-lined body structure from separate
ancestor populations
The sea star and sea urchin both share the same ancestor population that had a five
lined body structure. They inherited this structure from the ancestor population
It is impossible to say, Fossils are very old; therefore, we cannot make observations of
the sea urchin's ancestors, and we cannot explain its body structure,
All species have their own specific body structures, so it is a coincidence that this sea
star and sea urchin each have this specific type of five-lined body structure,
O

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

Will mark brainliest i only need the ! 1.use ten beads and a centromere of one color to construct the long chromosome. use ten beads and a centromere of a second color to construct the second chromosome in the long pair. make a drawing of the chromosomes in the space below. 2. for the second pair of chromosomes, use only five beads. 3. now model the replication of the chromosomes. make a drawing of your model in the space below. part b: meiosis i during meiosis i, the cell divides into two diploid daughter cells. 4. pair up the chromosomes to form tetrads. use the longer tetrad to model crossing-over. make a drawing of the tetrads in the space below. 5. line up the tetrads across the center of your “cell.” then model what happens to the chromosomes during anaphase i. 6. divide the cell into two daughter cells. use the space below to make a drawing of the result. part c: meiosis ii during meiosis ii, the daughter cells divide again. 7. line up the chromosomes at the center of the first cell, one above the other. separate the chromatids in each chromosome and move them to opposite sides of the cell. 8. repeat step 7 for the second cell. 9. divide each cell into two daughter cells. use the space below to make a drawing of the four haploid cells

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction