Answer:
Explanation:
Several scientists have made significant contributions to our current understanding of genetics. Here are a few examples:
1. Gregor Mendel: Mendel is often referred to as the "father of genetics." In the 19th century, he conducted groundbreaking experiments with pea plants and discovered fundamental principles of inheritance. His work laid the foundation for our understanding of how traits are passed down from one generation to another.
2. James Watson and Francis Crick: In the 20th century, Watson and Crick, along with Maurice Wilkins, elucidated the structure of DNA. Their discovery of the double helix structure in 1953 revolutionized our understanding of how genetic information is stored and transmitted. This laid the groundwork for modern molecular genetics.
3. Rosalind Franklin: Although often overshadowed, Franklin played a critical role in the discovery of DNA's structure. Her X-ray crystallography images provided crucial evidence that helped Watson and Crick develop their model. Franklin's work contributed to our understanding of DNA's physical properties and its role in inheritance.
4. Barbara McClintock: McClintock's research on corn plants in the mid-20th century revealed the existence of "jumping genes" or transposable elements. Her findings challenged the traditional view of genes as fixed entities and highlighted the dynamic nature of genetic material. McClintock's work earned her the Nobel Prize in Physiology or Medicine in 1983.
These scientists, along with many others, have made significant contributions to our understanding of genetics. Their discoveries have paved the way for further advancements in the field, leading to breakthroughs in areas such as genetic engineering, gene therapy, and personalized medicine.
b. mineral
c. fat
d. carbohydrate
*carbon monoxide, density: 0.001977 g/cm³
*helium, density: 0.000178 g/cm³
*carbon dioxide, density: 0.001977 g/cm³
*hydrogen, density: 0.00009 g/cm³
*oxygen, density: 0.001429 g/cm³
Answer:
I put A,C,E
Explanation:
b. Panic. All signs indicate that it is an HIV infection.
c. It could be the flu, but it could also be an HIV infection. It is very important to be tested at a medical facility.
d. none of the above
Please select the best answer from the choices ...
on the apple. This is what some of her stu-
dents said.
Archie: "The only force acting on the
apple is air pressure."
Sam: "There is one force acting on the apple. Gravity is the force that pulls on
the apple."
Soledad: "There are two forces: the desk pushes up on the apple and gravity pulls
downward on the apple."
Misha: "There are many forces acting on the apple; but, it is the holding force in the
apple that keeps it on the desk."
Tess: "There are no forces acting on the apple because the desk stops any forces
from acting on it."
Which student do you most agree with?
Answer:
Misha
Explanation:
Archie, Soledad and Sam are right about the types forces, but not how many. Misha is the only one who says there are multiple. Tess is just wrong.