In 1953, who developed the model that is shown below?

A double-helix of D N A.

James Watson and Francis Crick

Marshall Nirenberg and Heinrich Matthaei

Rosalind Franklin

Erwin Chargaff

In a cross between two tall plants with yellow seeds that are heterozygous on both traits (TtYy), supposed Mendel discovered that a small number of offspring (5-6%) from these parents were short and green (ttyy).

Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter

What is true about the current extinction rate? A. It's slower than the earlier mass extinction rate. B. It's primarily attributed to human intervention. C. It's attributed to natural environmental changes. D. It's necessary for evolution. E.

Which molecule would be the most affected by limited nitrogen? myofibrillar proteins in muscle glucose molecules in starch fat molecules surrounding organs cellulose molecules in plant cell walls

As temperature increases the rate of enzyme activity increases until it reaches approximately 37 degrees Celsius. As temperature increases beyond 37 degrees Celsius, the enzyme activity decreases. What causes this decrease in enzyme activity? A.

Radiation is produced by ... ?

A condition that causes narrowing of the coronary arteries so blood flow to the heart muscle is reduced a. arteries b. atriums c. capillaries d. carotid arteries

The structure of DNA resembles a spiral staircase, also known as a double

What is the medium in which sound travels inside a bird's body?

Which best describes a gene? A: different allele form of a trait B: tightly coiled strands of DNA C: the center of a chromosome D: a segment of a chromosomal DNA