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kati45 [8]
3 years ago
13

Helppppppppppppppppp

Biology
1 answer:
Alenkasestr [34]3 years ago
3 0
Bruh you literally just gotta look up the word and give an example
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I WILL GIVE BRAINLIEST!!!
Nesterboy [21]

Answer:

25%

Explanation:

When looking at a pedigree remember that:

  • squares are males
  • circles are females
  • the solid colored figure represents an individual affected by a disease
  • the empty figure represents a healthy individual

Let us assign the symbol X⁺ to represent the dominant allele linked to the X-chromosome and expressing healthiness, and X⁻ to represent the recessive allele expressing the dissease.

According to this pedigree

  • I1 is a man affected by the disease, YX⁻
  • I2 is a healthy woman X⁺X⁻
  • we can see that among the progeny (generation II) there are two individuals affected (a boy and a girl) and one healthy girl. This means that the mother I2 is heterozygous for the trait.

So, having their genotypes we can know what are the probabilities of getting a son with DMD

Parentals)    YX⁻     x     X⁺X⁻  

Gametes)   Y     X⁻      X⁺     X⁻

Punnett square)

                        X⁺             X⁻

            X⁻      X⁺X⁻         X⁻X⁻    

            Y        X⁺Y           X⁻Y

F1)

  • The probabilities of getting a healthy daughter X⁺X⁻ are 25%
  • The probabilities of getting a healthy son X⁺Y are 25%
  • The probabilities of getting a daughter with DMD X⁻X⁻ are 25%
  • The probabilities of getting a son with DMD X⁻Y are 25%
7 0
2 years ago
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Broken hill, dali, and atapuerca are sites where specimens of _______ have been discovered.
Serhud [2]
Archaic homo sapiens
4 0
3 years ago
Many animals are grouped together in a particular environment that best satisfies their needs. Which is their likely pattern of
Nimfa-mama [501]
"Clumped dispersion" is the one among the following choices given in the question that <span>is their likely pattern of dispersion. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your help.</span>
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The interchromosomal domains are the regions between chromosomal domains, and nothing happens there. T/F
MrRissso [65]

true because I like to study biology

3 0
2 years ago
After cheering wildly at an exciting football game your body may begin to relax on the way home. This relaxation reflects activi
siniylev [52]

Answer;

-Sympathetic nervous system

After cheering wildly at an exciting football game your body may begin to relax on the way home. This relaxation reflects activity of the sympathetic nervous system.

Explanation;

The sympathetic nervous system is part of the autonomic nervous system, which also includes the parasympathetic nervous system.

The sympathetic nervous system activates what is often termed the fight or flight response. Like other parts of the nervous system, the sympathetic nervous system operates through a series of interconnected neurons. Sympathetic neurons are frequently considered part of the peripheral nervous system (PNS), although there are many that lie within the central nervous system

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