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3 years ago

If all living things are related then where did all their differences come from?

Biology

1 answer:

stiks02 [169]3 years ago

7 0

Answer:

Hox Gene

Explanation:

First, you're question is very vital, there are many ways in classifying along with identifying all living organisms that includes; morphological analysis, molecular systematics (studying the similarities and differences of the genetic data such in the sequences of DNA, RNA, and rRNA ), homology, cladistics, etc. based on phylogenetic tree, which the study of the evolutionary among various species.

But through it said that all living organisms shared one common ancestor. However, what makes them different from one to another is the homeotic genes that called Hox Genes; which specify the fate of a particular segment or region of the body, meaning the number and arrangements of the Hox genes varies considerably among different types of animals.

For instance, Sponges have at least one homologous to Hox genes, also insects have nine or more Hox genes resulting in multiple Hox genes occur in a cluster in which the genes are close to each other along a chromosome. Therefore, increases in the number of Hox genes have been instrumental in the evolution of many animals species with greater complexity in body structure.

Overall, more Hox genes, more complexity in body structure resulting in the differences of their morphological structure.

Hope that answered your question!

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klemol [59]

Marble is formed from limestone and contains tiny interlocking grains.

Your answer is C.

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3 years ago

PLEASE HELP! I WILL GIVE BRAINLIEST. What 2 factors affect organisms and their habitats, and give examples of each

Grace [21]

Answer:

There are two categories of these factors: abiotic and biotic. Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.

Explanation:

Biotic factors are interactions associated with living organisms. They can also influence the distribution of organisms in an ecosystem. grazing - too little leads to dominant plants outcompeting other species, too much reduces species numbers overall. Both decrease biodiversity.

Abiotic factors affect the ability of organisms to survive and reproduce. Abiotic limiting factors restrict the growth of populations. They help determine the types and numbers of organisms able to exist within an environment.

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3 years ago

Suppose an animal is heterozygous AaBb, and the traits are not linked. When meiosis occurs, what is the total number of possible

GrogVix [38]

Answer:

4 possible combinations of gametes

Explanation:

The animal is considered an heterozygotic dihybrid because it involves two genes that have different alleles for both genes. The dihybrid animal undergoes meiosis to produce gametes. According to Mendel in his laws of segregation and independent assortment, the alleles of the two genes separate into gametes independently of one another to produce 4 types of gametes.

Number of possible combinations of gametes formed by an heterozygote can be determined by using 2^n, where n is the number of characters. Number of characters or genes involved in this case is 2, Hence, 2^2 = 4 gametes.

The allelic combination in the four gametes are: AB, Ab, aB, ab.

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4 years ago

The climate zones lying between 23.5° and 66.5° north and south latitude are called the _____ zones.

Veronika [31]

Answer:

they are the temperate zones

Explanation:

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3 years ago

The biological selection of a particular allele for a trait to be passed to offspring has nothing do with the selection of the a

blagie [28]

Answer:

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3 years ago