Answers:
1. <u>A) The chromosomes split apart at the centromere.</u>
2. <u>C) The chromosome pairs collect in a line across the middle of the cell.</u>
3. <u>B) anaphase</u>
4. <u>C) telophase I</u>
It depends if you're talking about Physical Science or Physics/Biology -- so, I'll give both definitions (:
Physical Science: the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
Physics/Biology: a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
Hope that helped! (:
Answer:
Cartilage
Explanation:
Cartilage helps join the bones together through parts so that the body can move, it also acts as a cushions so your bones do not rub against each other.
Answer:
Option D, aortic valve
Explanation:
The location of aortic valve i.e between the aorta and left ventricle, allows it to stop the blood from flowing back into the left ventricle.
The other options are incorrect as -
Pulmonary valve being located between the pulmonary artery and right ventricle, stop the blood from flowing back into the right ventricle.
The tricuspid valve and mitral valve stops the blood from flowing back into the right atria and left atria respectively.
Hence, option D is correct.
Answer:
Mammals. There are no known cases of naturally occurring mammalian parthenogenesis in the wild. This is because mammals have imprinted genetic regions, where either the maternal or the paternal chromosome is inactivated in the offspring in order for development to proceed normally.
Explanation:
have a good day
