The dramatic increase in the number of slaves from 1700- 1770:

The cladogram shown below describes the evolutionary relationship among several species, labeled A to F. The five dots represent

max2010maxim [7]

(You will find the cladogram in the attaches files)

Answer:

C. The genomes of species C and D are nearly identical because neither species has a derived character.

Explanation:

A Cladogram is a<em> tree-type graph</em> based on <em>cladistic analysis</em>. It represents the common ancestral relationships among the involved groups.

The tree-type graph is a ramified diagram that represents the relationship between the involved taxa.
The cladistic analysis follows the maximum parsimony criterium. Explains the character state from the point of view of the fewest changes through history. Explains evolution with the minimal amount of evolutive changes. It recognizes the monophyletic groups as natural groups. These groups are the clades, and their classification -<em>sequencing</em>- represents their phylogeny.

The<em> sequencing</em> term refers to lists of groups according to their relation. One group is the brother-group of the following one.

So the cladogram represents the relationship between groups according to a derived character.

The derivated character is any trait that a group passes to the descendants. Through evolution, the characters change, and new changes are added. When referring to a derivate character, we mean that all the subsequent species in the cladogram carry the trait.

A cladogram provides an image of how new species keep characters that were inherited from older species.

So, in the exposed example, the five dots represent derived characters, representing traits 1 to 5. Branches A to F, represent groups. (See the cladogram in the attached files). Group A inherited trait 1, group B probably still carries trait 1, but also trait 2. Groups C and D equally inherited trait 3. Group E inherited character 4, and finally, group F inherited character 5.

Groups C and D inherited trait 3 and probably also still have traits 1 and 2. So they are very similar to each other. At a certain point, they diverged, probably due to a new mutation that was not passed to the rest of the group.

C. The genomes of species C and D are nearly identical because neither species has a derived character. Correct.

6 0

3 years ago

You take a human smooth muscle cell and block the release of calcium from the sarcoplasmic reticulum. What effect does that have

Murljashka [212]

Answer:

The correct option is E) Contraction still occurs because Ca2+ can enter the cell directly through Ca2+ channels in the plasma membrane and bind to calmodulin.

Usually, the calcium ions are released from the sarcoplasmic reticulum of a cell during a muscle contraction, but if those are blocked, the contractions is an cell can still arise through the calcium ions which are present in the cell membrane of a cell.

3 0

3 years ago

Glycine (C2H5NO2) is added to a growing peptide chain containing methionine (C5H11NO2S) and alanine (C3H7NO2). Which of the foll

Katena32 [7]

Answer:

First Image

Explanation:

Amino acid order is NCC (Nitrogen, alpha carbon with R group attached, and carboxy group).

If we start with methionine, then we write its nitrogen, then alpha carbon and then carboxy and then alanine's nitronge, alpha, carboxy, and end with glycine nitrogen, alpha and carboxy.

I have labelled the "R" groups to show amino acids. First is methionine, then alanine and then glycine.

6 0

2 years ago

Genetic engineering can be used to create more productive strains of farm animals. By adding genes to an animal’s DNA, the anima

Veronika [31]

Genetic engineering is the direct treatment of an organism’s genome using biotechnology. It is a set of technologies used to alter the genetic makeup of cells, together with the transport of genes within and across species boundaries to produce improved organisms. An example would be to protect plant from insect damage, it can be made into a transgenic plant. Transgenic plant are called genetically modified organisms (GMO) because there is a gene added or removed in the original plant to obtain a set of characteristic such as insect damage.

6 0

3 years ago

In 1958, Meselson and Stahl conducted an experiment to determine which of the three proposed methods of DNA replication was corr

Katen [24]

<h2>Meselson and Stahl conducted an experiment to determine the correct proposed methods of DNA replication was semi-conservative. the three proposed models for DNA replication are semi-conservative, conservative, and dispersive.</h2>

Explanation:

In Semi-conservative replication model, the two strands of DNA uncoil from each other. It perform with the original strand and a new strand.

In Conservative replication model, DNA replication didn't open at all, but the parent strands remains undamaged by creating a new and separate molecule that consists of two new strands.

In Dispersive replication model, DNA replication results in two DNA molecules that consists of both parental and daughter DNA.

He demonstrated that semi-conservative DNA replication is an universal mechanism allocated by all organisms on Earth.

4 0

3 years ago