Answer:
<em>Heterozygous purple-flowered parents</em>
Explanation:
<em>A cross involving two heterozygous parents for a dominant trait always segregates in 3:1 phenotypic ratio according to Mendel's law of segregation.</em>
In this case, if purple flower colour is dominant over white flower colour and the trait is represent by P, the heterozygous purple-flowered pea plants will be Pp. If two heterozygous individuals are crossed,
Pp x Pp = PP, Pp, Pp, pp
Since P is a dominant allele, the phenotypic ratio will be 3 purple to 1 white.
<em>Hence, the results are consistent with heterozygous purple-flowered parents.</em>
I think the deficiency of dedicated respiratory and circulatory systems in Planarians does not cause a problem because none of their cells are far removed from the gastrovascular cavity or from the external environment. Planarians are free-living flatworms and form the class Turbellarians in the Phylum Platyhelminthes. Flatworms have three tissue layers, that is the ectoderm, mesoderm, and endoderm.
⭐️The answer is ⭐️
Fibrous joints are connected by dense connective tissue consisting mainly of collagen. These joints are also called fixed or immovable joints because they do not move. Fibrous joints have no joint cavity and are connected via fibrous connective tissue. The skull bones are connected by fibrous joints called sutures.
The chance of a coin landing heads or tails is 50% for each individual time. It doesn't matter what the previous throws resulted in. If you flip a coin ten times you can get ten heads, but the probability is still 50% for each toss. The same holds true with gametes. The probability is 50% at the production of each individual cell.
Answer:
The correct answer is: upper esophageal sphincter.
Explanation:
The alimentary canal is a very long tract responsible for the digestion of the food. It is composed of several organs with many different and important functions. The alimentary canal also has a few sphincters, which are muscular valves that open and close when needed for the food to pass or be retained.
The first sphincter is the upper esophageal sphincter. One particularity of this sphincter is that is one of the few sphincters in the body that opens and closes under our conscious control, which happens when we decide to swallow our food.
From the first to the last, the order of the sphincters in the gastrointestinal tract is: upper esophageal sphincter, lower esophageal sphincter or gastroesophageal sphincter, pyloric sphincter, ileocecal sphincter, and anus.
