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sweet [91]
3 years ago
15

Use the image of the periodic table to answer the following: Which of the

Biology
1 answer:
m_a_m_a [10]3 years ago
3 0

Answer:

Wish I could be of help but I like your peppa pig sticker :)

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PLLLZ HELP Which point on the timeline best indicates the time when birds first appeared?
Vedmedyk [2.9K]

Answer:

The answer should be C

Explanation:

If you look at the the graph, C points to the time period after mammals appeared. Since birds are mammals, they should have appeared after the time that mammals first came to be on Earth.

Hope this answer helps you! Please rate it and mark it Brainliest!

3 0
3 years ago
People who are tune deaf are unable to follow a rhythm. Scientists have evidence that tune deafness can be genetic. The pedigree
butalik [34]

Question

Pedigree attached

a. Provide evidence from the pedigree that conclusively shows that the tune deafness allele is autosomal dominant, not autosomal recessive. Explain your reasoning.

b. Identify the genotypes of individuals 5 and 6, and then draw the Punnett square for the cross of these two individuals.

c. Compare the expected percentage of each phenotype of the offspring from the cross in part (b) with the actual percentage of each phenotype observed in the children of individuals 5 and 6.

Answer/Explanation:

a. Autosomal dominant means that even having one copy of the allele T will produce a tune deaf individual. The evidence of this is that individuals II.3 and 4 have children (III. 8 and 9) with normal tune perception. This suggests that they have inherited the normal allele from both parents. That means II.3 and II4 must be heterozygous, in order to pass on the normal allele. This makes sense if tune deafness is dominant (because 3 and 4 will both be Tt and Tt, so can pass on the t alleles). However, if tune deafness was recessive, that would mean that individual II 3 and 4 both have to carry 2 copies, meaning there is no way their children would have normal tune perception.

b. Since individual 5 is unaffected and we know this is the recessive trait, they must be Tt. Since individual 6 is affected, they must be either Tt or tt. However, they have children who are unaffected (11, 12, 13) who must be tt. This means, individual 6 must have the t allele to pass on, and must be Tt. Therefore, the cross between individuals 5 and 6 is tt x Tt:

         T        t

t        Tt       tt

t       Tt       tt

c) The punnet square shows the children from (b) have a 50:50 chance of being tune deaf vs normal tune perception (50% each). In contrast, the actual ratios are 25% tune deaf to 75% normal tune perception. (1:4). This deviates from the expected ratio, but since all of these are due to chance, it is not an unexpected occurrence. Perhaps if there were 10, 50 or 100 children (!) from this cross, the results would be more like the expected ratio

5 0
3 years ago
Which statement best describes ATP?
myrzilka [38]

Answer;

C) It stores energy that comes from glucose.

Explanation;

-ATP is a biomolecule that is a product of cellular respiration which is used as a store of energy and is the usable form of energy by the cell.

-ATPs are used as the main energy source for metabolic functions. They are consumed by energy-requiring (endothermic) processes and produced by energy-releasing (exothermic) processes in the cell.

-ATP is able to store and transport chemical energy within cells. Energy is released by hydrolysis of the third phosphate group.

7 0
3 years ago
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What happens to energy as molecules are broken down into their different atoms?
ElenaW [278]
If the molecules are broken down into their different atoms that’s mean that the molecules are going fast or slow
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How can we get bacteria off of us
WITCHER [35]

Answer:

by washing ourselves with soap

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