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hodyreva [135]
2 years ago
13

Dogs (Canis lupus familiaris) and gray wolves (Canis lupus) can interbreed to produce viable, fertile offspring. These species s

hared a common ancestor recently (in geologic time) and have a high degree of genetic similarity, although their anatomies vary widely. Judging from this evidence, which two species concepts are most likely to place dogs and wolves together into a single species?
Biology
1 answer:
geniusboy [140]2 years ago
7 0

Answer:

1. Biological Species Concept

2. Phylogenetic Species Concept

Explanation:

Ernst Mayr defined the species on the basis of the biological species concept. Accordingly, the organisms that are capable of interbreeding to produce fertile progeny belong to the same species.  

Since dogs and gray wolves are able to produce fertile progeny, they belong to the same species as per the biological species concept.  

According to the phylogenetic species concept, two organisms that share a recent common ancestor and exhibit certain derived traits, belong to the same species.

According to the given information, dogs and gray wolves are descended from a common ancestor and hence, belong to the same species according to the phylogenetic species concept.  

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3 years ago
Match the following terms and definitions. 1.breeding of individuals that have genes for two different characteristics codominan
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<span>Answers;
1.Breeding of individuals that have genes for two different characteristics; Dihybrid cross
2.A grid system used to predict possible combinations of genes due to random fertilization; Punnet square
3 A condition in which both alleles are dominant; Codominance
4.when more than two alternatives exist for a gene; multiple alleles
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Explanation;
</span>Dihybrid cross;
<span>It involves the breeding of individuals that have genes for two different characteristics. It involves the cross of individuals that are both heterozygous for two different traits. For example two different traits in a pea plant; color and shape; for color we have; Y-allele for yellow seeds and y- allele for green seeds, For Shape trait; R-allele for round seeds and r-allele for wrinkled seeds. So the dihydbrid cross would be (RrYy </span>× RrYy). 
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Punnet square;

</span><span>This a grid system or a square diagram that is used to predict possible combinations of genes due to random fertilization. It is used by biologists determine the probability of an offspring having a particular genotype. 
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</span>
Codominance
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<span>This is a condition in heterozygotes in which both members of an allelic pair are dominant and both contribute to the phenotype. 
A good example of codominance is the ABO blood group; A person with blood group AB, it means that both the A allele and B allele are equally expressed. 

Multiple alleles

</span><span>This is when more than two alternatives for a gene exist.
Examples of multiple allelism in human;The genes of the ABO blood group system. The human ABO system is controled by three alleles, namely; A-allele, B-allele and O-allele.

Incomplete dominance;
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