An organism’s scientific name is Dendroica pensylvanica. What classification level does pensylvanica refer to?

Based on cross-cultural research, which of the activities below has the greatest cross-cultural acceptance?

Dvinal [7]

i think the answer is B

5 0

2 years ago

The allele that may not be expressed or that is hidden in a phenotype

kolezko [41]

The allele that is not expressed or is hidden is the recessive allele.

3 0

3 years ago

Read 2 more answers

What clues could you use to help determine whether movement of oslutes through the apicl and basolateral cell membranes is passi

Setler79 [48]

Answer:

Clues that can be used to determine whether the movement of solutes through the membrane is passive or active could be the molecule size, membrane potential, and the presence/absence of membrane protein.

Explanation:

Solutes transport through the cellular membrane depends on the solute size, membrane potential, and the presence/absence of integral membrane protein.

There are two types of transport: Active and passive.

- Passive transport: It does not need energy; it is driven by a chemical potential gradient. Small molecules with no charge are transported through the membrane in a gradient favor, from a high concentration region to a low concentration region. There are two types of passive transport: By simple diffusion (small molecules pass through the membrane by themselves) and by facilitated diffusion (molecules are helped by integral membrane proteins to pass through the membrane). In facilitated diffusion, the helping protein can be a channel protein (hydrophilic pores that allow the molecule to pass with no interaction) or a carrier protein (proteins with mobile parts that suffer modification as the molecule pass to the other side).

- Active transport: It does need ATP energy to pass the molecule through the membrane, as they have to move against the electrochemical gradient. This kind of transport is always mediated by a carrier protein. These proteins join with the molecules and suffer changes as they pass the solute to the other side of the membrane. An important example of this kind of transport is the sodium-potassium bomb.

6 0

3 years ago

What is one requirement for new species to form?

Illusion [34]

Answer:

they have to evolve

Explanation:

5 0

2 years ago

A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR).

igomit [66]

So I don’t see answer choices here, but your answer is 50% of the offspring will be homozygous dominant with RR, and 100% of them will carry a homozygous dominant gene of Rr

If you take the two sets and put them into a punnett square, it would look like this (image attached):

When the two sets of alleles are crossed, you would end up with half of your pairs being fully dominant (RR), and the other half being dominant while containing a recessive gene (Rr). Since there’s only one recessive gene in these pairs, it gets overridden and the pair itself is dominant.

So your answer is 50% will be homozygous dominant with RR!

7 0

3 years ago