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saveliy_v [14]
3 years ago
13

An example of a biological event that follows a circadian rhythm is:

Biology
1 answer:
nikitadnepr [17]3 years ago
3 0
Sleep is an example. 
Circadian rythms are biological processes that repeats itself within a certain time frame, as sleep repeats itself approximately once every day. 
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Sloan [31]

Answer:

A)11,460 years

Explanation:half of a radioactive element represent the time take for half of it's components to dissociate or disintegrate.

For carbonn14 that undergo an emmision to form a stable carbon 14,it moves thus

14C(1 part) ______14C(0.5 parts)_____14C(0.25parts)

i.e it undergo two radioactive decay which means two half lives .

Since each half life is 5780 years ,the age will be 2×half lives= 2×5780=11,460 years

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liraira [26]
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3 years ago
If a father is affected by an X-linked dominant condition and the mother is not, which children can inherit the condition?
kaheart [24]

Answer:

only females

Explanation:

In humans, sex chromosomes in males and females are different. The sex chromosomes found in humans are X and Y chromosomes. X-linked trait is a trait which is inherited on the X- chromosome. According to the question, the trait is passed on a X-linked dominant condition, which means the condition is inherited on the abnormal dominant X-chromosome that will express itself even when in an heterozygous state with a normal X-chromosome.

Hence, a father affected by the condition will have a genotype; XY while a mother that does not have the condition will have a genotype: xx (two normal x chromosomes). Since the Father can only pass his X chromosome to his daughters and never his sons, all his daughters will inherit the condition (see the punnet square in attached image).

N.B: None of the sons will inherit the condition since the mother will pass normal X-chromosomes (x) to her sons.

7 0
3 years ago
What is loveand it's causes​
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5 0
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Suppose that two people having free earlobes start a family. The first child has free earlobes and their second has attached ear
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Answer:

F is for free, f is for attached

a. Ff, Ff

b. FF, or Ff

c. ff

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Parents and first child have free earlobes so it must be dominant trait while attached is recessive. In order to have a recessive trait as seen in the second child, the parents must have a recessive allele.

4 0
3 years ago
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