The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
Answer:
<h2>(14+16)/1000 *100= 3</h2>
Explanation:
Parental combinations are always more common then other recombinant progenies.
A female fly is heterozygous for three X-linked genes crossed with an abc/Y male. . If single crossover occurs between a & b and between b & c, then the double cross is that, which occurs in both.
Double cross over progeny are always least in number, so here double cross occurs are in abC 14 and ABc 16.
So we are expecting that number of double cross over progeny= (14+16)/1000 *100= 3
1. brown and red in color to help blend into their dry habitat
2. a weasel-like body that helps them maneuver around bushes, trees, and predetors
1. they typically live alone and hunt mainly during the night time. this helps them keep a low profile in large plains
2. they made a wide variety of sounds, some for fun, some for mating, some to luring prey
Answer:
The correct answer would be B) there are no similarities in the embryos of all four groups.
There are similarities in various stages of the embryonic development of different species. They look very similar in the early stages of development. The ancestors of the different animals are same and this implies that they are related.
For example, the embryo of both human and fish has gill slit but in the later stages, the gill slit of human embryo disappears. The difference in later stages shows the evolution of different traits but the beginning of creatures are same.
It is why comparative embryology is also used to provide evidence of evolution.
Thus, the development of four vertebrates and suggests all of the following EXCEPT there are no similarities in the embryos of all four groups.
Your hypothesis and during your conclusion
