This would be a recessive disease.

Father is dd
Mother is Dd (has to be because one child has the disease)

Parents cross is dd x Dd which gives rise to Dd (0.5) and dd (0.5). Each time they have a child they have a 50% chance of the child having the disease. In their case, only one of their 3 children is dd. The others though are carriers!

5 0

2 years ago

Feather color in a certain species of bird is controlled by a pair of alleles that exhibit incomplete dominance. if birds that a

3241004551 [841]

The heterozygous birds phenotype would therefore be black and white because both parent genes are dominant so they would be fully expressed,none would overpower the other(no dominant or recessive) this is known as Codominance and and example of this is with the blood types.

6 0

3 years ago

How did the frequency of stimulation affect the amount of force generated by the isolated skeletal muscle when the frequency of

Alexxandr [17]

Answer:

When the frequency of stimulation of a muscle increases -without it having the opportunity to relax- a process called summation (addition) occurs, promoting an increase in the generation of force in the isolated skeletal muscle.

Explanation:

Summation is a phenomenon that occurs as a consequence of the arrival of successive stimuli that produce the contraction of the skeletal muscle before it achieves its partial or total relaxation, between subsequent stimuli.

When the summation occurs in the muscle, the force generated on it increases its magnitude proportionally to the number of stimuli received, maintaining the muscle contraction in time.

Tetany is the prolonged contraction of a muscle in an abnormal way, by the summation of stimuli received , as some bacterial toxins can produce. The summation can be temporary -when multiple stimuli reach the muscle in a determined time- or spatial, when the amount of stimuli activates a greater amount of motor units.

Learn more:

Spatial summation in a post synaptic neuron brainly.com/question/9632682

3 0

3 years ago

What was the second organism to be found here on planet Earth? *

mafiozo [28]

What was the second organism to be found here on planet Earth?

Prokaryotes

The prokaryotes are considered to be the most oldest on earth. The first found organism on earth was bacteria and then many other Prokaryotes were found...~

7 0

1 year ago

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