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Bess [88]
2 years ago
12

A researcher observing an ecosystem describes the amount of sunlight, precipitation and type of soil present. Which factors is t

he researcher most likely describing?
Biotic factors in a forest.
Biotic factors in a tundra.
Abiotic factors in a prairie.
Abiotic factors in a coral reef.
Biology
1 answer:
anastassius [24]2 years ago
6 0
A researcher observing an ecosystem describes the amount of sunlight, precipitation, and type of soil present. The researcher is most likely describing abiotic factors in a prairie. 
A and B are incorrect because the factors described are abiotic, not biotic.
Di is incorrect because abiotic factors listed include soil, which is not likely to be described in an ocean environment. 
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Comparable segments of the mitochondrial DNA sequences of two similar species are shown below. This segment of DNA mutates at a
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132 million years ago
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In humans, the eye color and hair color genes are located on different chromosomes. Brown eyes (B) are dominant to blue (b), and
Andrej [43]

Answer:

Man's genotype: Bbdd

Woman's genotype: bbDd

First child's genotype: Bbdd

Second child's genotype: bbDd

Explanation:

This is a dihybrid cross involving two genes; one coding for eye color and the other for hair color in humans. The allele for brown eye (B) is dominant over the allele for blue eyes (b) in the first gene while the allele for dark hair (D) is dominant over the allele for red hair (d) in the second gene.

According to the question, A man with brown eyes and red hair will possibly possess genotypes: BBdd or Bbdd while a woman with blue eyes and dark hair will possibly have genotype: bbDD or bbDd. Considering the fact that they produced children with recessive traits for both gene (blue eyes and red hair), it means that they are heterozygous for their dominant trait. This means that the ideal genotype for the man is Bbdd since he will produce gametes containing B and b alleles for the first gene while the ideal genotype for the woman is bbDd since it will produce gametes with D and d allele for the second gene.

Hence, a child with brown eyes and red hair will possess genotype: Bbdd since he/she cannot receive two dominant alleles for the first gene from both parents. A child with blue eyes and dark hair will have genotype: bbDd since he/she cannot receive two dominant alleles of the second gene from both parents.

3 0
3 years ago
Explain the role of cellular reproduction in maintaining genetic continuity in a plant cell
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Cellular reproduction in a plant is asexual, the cell makes a copy of itself. I think the process is called Mitosis.
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The smallest functional found within a cell are called
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In general, the term organelle is used for the small structures within a cell.

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most people don't need to count every single micronutrient they eat. instead doctors recommend that they eat a well balanced die
Korvikt [17]

Answer:

The nutrition therapy goals for the individual with diabetes have evolved and have become more flexible and patient centered. The goals from the American Diabetes Association (ADA) 2019 include the following: (2)

1.

To promote and support healthful eating patterns, emphasizing a variety of nutrient dense foods in appropriate portion sizes in order to improve overall health and:

➢

Achieve and maintain body weight goals

➢

Attain individualized glycemic, blood pressure, and lipid goals

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Delay or prevent complications of diabetes

2.

To address individual nutrition needs based on personal and cultural preferences, health literacy and numeracy, access to healthful food choices, willingness and ability to make behavioral changes, as well as barriers to change

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To maintain the pleasure of eating by providing nonjudgmental messages about food choices

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To provide an individual with diabetes the practical tools for day-to-day meal planning rather than focusing on individual macronutrients, micronutrients or single foods

The American Association of Clinical Endocrinologists (AACE) guidelines have similar goals for people with type 2 diabetes. (3)

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