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2 years ago

Formulate a theory about one aspect of human development and a hypothesis that relates to it

1 answer:

6 0

A theory is that human species is evolutionary linked to apes and one hypothesis may be the association of this process with certain homologous structures.

<h3>What is the evolution theory?</h3>

The evolutionary theory is a scientific theory that explains how organisms evolve from a common ancestor.

This theory can be used to explain the presence of homologous strictures between humans and primate during embryonic development, which may be verified by establishing hypotheses that can be confirmed by experimental procedures.

In conclusion, a theory about one aspect of human development is we are evolutionary linked to apes and one hypothesis is it is associated with certain homologous structures.

Learn more about the evolutionary theory here:

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The phase of the menstrual cycle that is characterized by a sharp decline of both estrogen and progesterone and a shedding of th

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3 years ago

3. Pansies can grow to be tall (T), which is dominant, or short (t), which is recessive. They can also be red (R),

Vilka [71]

Answer:

Pansy 1 Genotype: TtRr

Pansy 2 Genotype: ttrr

Pansy 1 Gametes: TR, Tr, tR, tr

Pansy 2 Gametes: All tr

Phenotypic ratio of offspring: 1:1:1:1 (1 Tall red: 1 Tall white: 1 Short Red: 1 short white)

Explanation:

This is a cross involving two different genes; one coding for height and the other for colour in pansies. The allele for Tallness (T) is dominant over the allele for shortness (t) in the first gene while the allele for red color (R) is dominant over the allele for white color (r) in the second gene.

According to the question, a pansy

that is heterozygous for both traits will have a genotype: TtRr while a pansy that is homozygous recessive for both traits will have a genotype: ttrr

In a cross between a TtRr and ttrr, the following allelic combinations of gametes will be produced by each pansy;

TtRr- TR, Tr, tR and tr

ttrr- tr, tr, tr, tr

Using these gametes in a punnet square (see attached image), a phenotypic ratio 1:1:1:1 consisting of (4 Tall red: 4 Tall white: 4 Short Red: 4 short white) offsprings will be produced.

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3 years ago