Answer:
A malaria outbreak causing allele frequencies to change is an example of <u><em>natural selection.</em></u>
Explanation:
Natural selection is a type of selection in which those organisms are favoured to live and reproduce which are better adapted to live in an environment. Due to natural selection, the allele frequencies of a population will tend to change with the passage of time.
When the outbreak of malaria occurs, those organisms which do not catch malaria are able to survive and pass on their characteristics to their offsprings. the other organisms die and do not reproduce. This will cause changes in the allele frequencies.
<em>I believe that both the Bat and Humans have the most recent common ancestor. The reason I say this is because both diagrams show a wrist and arm-like structure. Also, they both hold a similar quality of fingers.</em>
<em>Hope this helps and have a nice day.</em>
<em>-R3TR0 Z3R0</em>
Answer:
The number of linked genes, which are common to the group.
Explanation:
A gene map signifies towards a chromosomal map, which illustrates the spatial organization of genes on a chromosome. The genes, which are situated on distinct chromosomes or, which are situated far away on the similar chromosome are illustrated as unlinked genes, while the genes that are near to each other on the similar chromosomes are considered to be linked.
The linkage maps are formed by determining recombination frequency for many pairs of genes. The linkage maps demonstrate the order and relative distance of the genes on the chromosome. In order to form a linkage map for an array of organisms, the scientists have to predict the number of linked genes, which are common to the group.
<h3><u>Answer;</u></h3>
Ectoderm
During gastrulation in frogs, cells from the animal pole spread over the embryo and form the <u>ectoderm</u>.
<h3><u>Explanation</u>;</h3>
- <em><u>Gatrulation is when the three germ layers form around the embryo in preparation for the next step of embryogenesis, that is organogenesis. The three germ layers namely; ectoderm, endonderm and mesoderm are the basis of all the organs that will form after this stage.</u></em>
- Ectoderm is the outermost layer, which later froms may different lining such as the outer layer of the skin, esophagus, and many other organs. Endoderm is the inside layer of gastrula and forms the digestive tract of the embryo. Mesoderm is the middle layer and ends up becoming the skeletal muscles of organisms as well as bones, blood, and sex organs.
