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Vaselesa [24]
4 years ago
9

What feature of the skeleton eventually allow a child to maintain balance while walking and running?

Biology
1 answer:
Triss [41]4 years ago
5 0
The vertebral column, when seen from the side, has 4 curves: 2 convex curves (cervical and lumbar curves) and 2 concave (thoracic and sacral curves). This curves are the feature of the skeleton that allow a child to maintain balance in the upright position eventually.
When we are born we have a single concave curve throughout the whole vertebral column but, as we grow, still in the early months as we try to hold our head, the cervical curve starts to develop, and later, as we try to sit up, stand up, and walk, the lumbar curve aslo starts to develop. In few years we have all curves fully developed.
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Photosynthetic algae create sugars that will eventually be broken down during which process?
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Respiration will break down the sugars or glucose created by the algae
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3 years ago
Which allele for human blood type is recessive?
sergij07 [2.7K]

Blood type doesn't fall into the category of dominant/recessive genes exactly; rather it combines this with the properties of incomplete dominance. Ignoring the Rh factor, there are 3 alleles for blood type, I^a,I^b, and i. You will be type A if you have I^a I^a or I^a i and type B if you have I^b I^b or I^b i. You can also get type AB by having the combination I^a I^b or be type O if you have i i. If you need to use dominant/recessive, you can say the A and B allele are dominant over the O allele and codominant with one another.

7 0
3 years ago
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In watermelons, bitter fruit (B) is dominant to sweet fruit (b), and yellow spots (S) are dominant to no spots (s). The genes fo
lubasha [3.4K]

If an F1 plant is backcrossed with the sweet, unspotted parent, the phenotypic proportion that is expected in the offspring will be in the ratio of 1:1:1:1.

<h3>What is Backcross?</h3>

Backcross may be defined as a type of cross where the F1 hybrid is crossed with either the recessive or dominant traits.

This question typically represents a dihybrid cross implicating two genes, one coding for fruit taste and the other for spot color. The allele for bitter taste (B) and yellow spot (S) is dominant over the allele for sweet taste (b) and no spot (s) respectively.

So, a heterozygous F1 resulting from a cross between a purebred dominant (bitter fruit, yellow spot) and purebred recessive (sweet fruit, no spot) will have a BbSs genotype.

When the F1 hybrid BbSs is backcrossed with the sweet, unspotted parent (bbss), the phenotypes with their proportions are given below:

  • Bitter fruit, yellow spot (BbSs, 1)
  • Bitter fruit, no spot (Bbss, 1)
  • Sweet fruit, yellow spot (bbSs, 1)
  • Sweet fruit, no spot (bbss, 1).

The Punnett square of this cross is described below:

Therefore, if an F1 plant is backcrossed with the sweet, unspotted parent, the phenotypic proportion that is expected in the offspring will be in the ratio of 1:1:1:1.

To learn more about Dihybrid cross, refer to the link:

brainly.com/question/8083392

#SPJ1

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Ascites is a condition in which excess fluid accumulates in the abdomen. In this condition around 25ml of the fluid get collected inside the peritoneal cavity. The symptoms associated with this problem includes the increase in the size of the abdomen, increase in weight, shortness of the breath and abdominal discomfort.

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What is the need to classify organisms
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2) ability to identify specific distinguishable characteristics of a given organism.
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5) identification of organisms with economical uses to human.
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