All categories

3 years ago

What does the notation Rr mean to geneticists

2 answers:

7 0

R is a dominant recessive trait while the little r is non-dominant.
for example, brown eyes are dominant over blue eyes, so the brown eyes would win over the non dominant trait.

olasank [31]3 years ago

4 0

it means really dumb rabbits

NAH JK

Homozygous: two of the same allele. Rr is therefore Heterozygous

You might be interested in

Which of the following body systems has the main function of sending signals from one part of the body to other parts of the bod

Lynna [10]

Answer:

C. III only

Explanation:

The nervous system controls all the functions of the body through the transmission of nerve impulses throughout the body.

The nervous system is composed of:

Central nervous system: brain, spinal cord
Peripheral nervous system: nerves

Sensory nerves in various parts of the body conduct nerve impulses and transmit the signals to the central nervous system that generates a response that travels through motor neurons to the site of the stimulus.
Apart from the nervous system that communicates through electrical signals, the endocrine system coordinates body functions through chemical signals.

4 0

3 years ago

10 POINTS PLZ ANSWER FAST

Alborosie

Answer:

C. broken down

Explanation:

3 0

3 years ago

An ecosystem in which all of the associated species are stable and uniform is called a

Alika [10]

C.Secondary Community

7 0

3 years ago

A coyote can alter its diet to match seasonal abundance of plants, fruits, or small animals, and would therefore be considered _

igor_vitrenko [27]

Answer:

a generalist sorry I don't know the other one

Explanation:

7 0

3 years ago

(a) Identify the most likely mode of transport across the membrane for substance L. Explain how information provided helps deter

Viefleur [7K]

Active transport occurs against the electrochemical gradient. It needs energy to move molecules from the lower concentration side to the higher concentration side. The mode of transport is active transport. 

-------------------------------------------------

There are three main different types of transport across the membrane

Simple diffusion ⇒ Does not need energy to occur
Facilitated transport ⇒ Does not need energy to occur
Active transport ⇒ Needs energy to occur

Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen.

Molecules move from the lower concentration side to the higher concentration side of the membrane.

Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential.

In the exposed example, a scientist wants to determine how substance L enters a cells in a culture.

The cells maintain a 120 mM intracellular concentration of substance L.

Varying external concentrations of substance L (10 to 100 mM) in culture medium (Table 1).

Table 1. Rate of entry of substance L into mammalian cells in culture

External concentration of substance(mM) Rate of entry of substance L

10 5%

20 25%

30 45%

40 65%

50 80%

60 90%

70 95%

80 100%

90 100%

100 100%

Now, we need to identify the most likely mode of transport across the membrane for substance L, and explain how information provided helps determine the most likely mode of transport.

We know that the intracellular concentration is 120mM.

As we can see, this concentration exceeds all of the culture media concentrations. Yet, the substance keep moving into the cell.

As the concentration inside the cell is always higher than the concentration outside, we can assume that this is not passive transport because the molecule transport is going against its concentration gradient.

Hence, the remaining option is active transport. And as said before, we can see it because the substance keeps crossing the membrane toward the cell interior despite its concentration being higher in the interior of the cell than in the exterior.

-------------------------------------------------------------

6 0

3 years ago