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3 years ago

If you guys knows this also help please

Biology

1 answer:

docker41 [41]3 years ago

7 0

Answer: The group of participants who are exposed to the independent variable. These participants receive or are exposed to the treatment variable.

Explanation:

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One of your brother's friends, Dylan, is unusually short with a stocky build; has a flat face, a large tongue, and an extra fold

Oksanka [162]

Answer:

Dylan likely has Down Syndrome / 21 Trisomy Syndrome.

Explanation:

Down Syndrome is a genetic disorder in which the person has an extra copy of chromosome 21, this is why the disorder is known as Trisomy 21. This extra copy changes how the body and the brain develope, which can cause mental and physical problems.

Children with this disorder usually have a low intellectual level, the most frequent cause of identifying mental delay of genetic origin.

Some of the characteristics of these children are slight diminution in the skull size, almond-shaped eyes, a short neck, small ears, a small mouth, a large tongue tends to get out of the mouth, narrow auditive conduct, tiny hands, and feet, weak muscular tone, and they are usually short in height.

There are also some medical problems such as hearing loss, apnea, ear infections, ocular problems, heart defects, intestinal malformations, hypothyroidism, hip dislocation, anemia, among others.

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3 years ago

In a population of tree frogs, the allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y). I

polet [3.4K]

Hardy-Weinberg Principle

Genotype frequency equation

$p^{2} +2pq + q^{2} = 1$

Where p² is the freq of homo dominant genotype, 2pq is the freq of heterozygous genotype and q² is the freq of homo recessive genotype.

Allele frequency equation

p + q = 1

Where p is the frequency of dominant alleles and q is the frequency of recessive alleles.

Yellow eyes in the frog offspring is a phenotype (physical trait) that would be a expressed by a geneotype (YY or Yy). This frequency, 0.85 includes: p² + 2pq

0.85 + q² = 1

q² = 0.15

p = $\sqrt{0.15}$

Then p + $\sqrt{0.15}$ = 1

1 - $\sqrt{0.15}$ = p

p = 0.613

61%

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3 years ago

Use for fossils found in sedimentary rocks

sveticcg [70]

Answer:

Fossils can be described as the dead remains of plants and animals which are used to study evolutionary histories of organisms. The most common type of rocks on which imprints of dead plants and animals will form are the sedimentary rocks. The fossils found on the sedimentary rocks can also be used to date the sedimentary rocks and study how old the rock or the imprints on it are.

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3 years ago

Weather maps use isobar lines to show weather conditions. Which of the following information is indicated by these lines?

shtirl [24]

Answer should be A :)
hope i helped

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3 years ago

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Which structure in this plant cell represents the site of ATP production from photosynthesis?

lianna [129]

Answer;

Structure B (chloroplasts)

Explanation;

The process of Photosynthesis takes place inside plant cells in small things called chloroplasts. Chloroplasts contain a green pigment called chlorophyll. This pigment is responsible for absorbing light energy or sunlight from the sun that is used to breakdown or split water molecules into hydrogen ions and oxygen atoms, during the light-dependent stage of photosynthesis.

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