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EastWind [94]
3 years ago
6

You and your colleagues are constructing a pedigree for a boy with cystic fibrosis. The individual’s younger brother has also be

en diagnosed with cystic fibrosis. How would these brothers be represented in a pedigree?
Question 10 options:

Both would be represented as completely shaded circles.

Both would be represented as completely shaded squares.

The older brother would be a shaded square, while the younger brother would be a half-shaded square.

Both would be represented as unshaded squares.
Biology
1 answer:
zzz [600]3 years ago
3 0

Answer:

<em>The correct option is B) Both would be represented as completely shaded squares.</em>

Explanation:

A pedigree can be described as a chart or a diagram which reflects the occurrence of a particular phenotype from one generation to another in a family. It determines the family history for a trait.

In a pedigree, males are usually drawn as squares. A male who is carrying a disorder or a particular phenotype under study is represented by shading the square. A male who is a carrier for the trait under study is represented by lines on the square. Hence, option B is correct.

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How will wolf emigration affect a grassland ecosystem that supports rabbits, the wolf's primary prey?
svet-max [94.6K]

Wolf emigration will bring about the rabbit population increasing.

<h3>What is Emigration?</h3>

Emigration is defined as the movement of organisms away from a particular

area or habitat.

We are aware that Wolves feed on rabbits as a means of food in the

grassland ecosystem. This translates to the following below:

  • The greater the wolves the lesser the rabbit
  • The lesser the wolves, the higher the rabbit.

This therefore means that wolf emigration will bring about the rabbit

population increasing which makes option B the most appropriate choice.

Read more about Emigration here brainly.com/question/1289209

6 0
2 years ago
What is the expected phenotype of F1 progeny from a cross between two homozygous recessive mutants disrupted in different genese
LenaWriter [7]

Answer:

The correct answer would be - wildtype.

Explanation:

Let assume there are four genes which are :

A-B-C-D

In mutant first, the genotype would be:---a-b-C-D

In the mutant second, the genotype would be:--A-B-c-d

If both of these genotypes are crossed with each other, the recessive genes a, b of mutant first is dominated and masked the expression by the dominant genes present in the mutant second.

Similarly, the recessive genes of the mutant second are dominated and masked expression by the dominant genes of mutant first.  This is possible only due to different genes are present in mutants.

Thus, the correct answer is - The correct answer would be - wildtype.

6 0
3 years ago
What must be true in order for individuals best suited for growth and reproduction in a particular environment to contribute dis
11111nata11111 [884]
<span>In order for individuals best suited for growth and reproduction in a particular environment to contribute disproportionately to the next generation natural selection must take place. Natural selection is one of the basic mechanism of evolution. This mechanism leads</span> to adaptations and adaptations contribute to survival and reproduction.
7 0
4 years ago
A student analyzed a viral genome and found that the genome had the following nucleotide composition.
lapo4ka [179]

Answer:

Option A) Double-stranded DNA

Explanation:

Note that the presence of thymine, a pyrimidine nitrogenous base in the genome indicates the presence of DNA.

Then, the summation of 28% adenine + 20% thymine + 35% cytosine + 17% guanine to yield 100% confirms that the DNA is double-stranded.

Thus, the structure of the viral genome is Double-stranded DNA.

7 0
3 years ago
A diffuse, nontoxic goiter is usually due to a lack of _____ in the diet.
prohojiy [21]

Answer;

Iodine

A diffuse, nontoxic goiter is usually due to a lack of Iodine in the diet.

Explanation;

-A diffuse non-toxic goiter is an enlargement of the thyroid gland without nodularity. It occurs in an endemic and sporadic distribution. It does not result from an inflammatory or neoplastic process and is not associated with abnormal thyroid function.

-Simple nontoxic goiter, which may be diffuse or nodular, is noncancerous hypertrophy of the thyroid without hyperthyroidism, hypothyroidism, or inflammation. Except in severe iodine deficiency, thyroid function is normal and patients are asymptomatic except for an obviously enlarged, non tender thyroid.

5 0
3 years ago
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