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Zepler [3.9K]
3 years ago
15

What are the two ways the hypothalamus sends messages to the pituitary gland?

Biology
1 answer:
Arturiano [62]3 years ago
4 0
The hypothalamus synthesizes and secretes certain hormones called releasing hormones which stimulate the secretion of pituitary hormones.

The hypothalamus gland uses the nervous system and secretes hormones which sends messages to the pituitary hormones.


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What is the probability that the first offspring from the cross listed below will be heterozygous for all loci?
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Answer and Explanation:

<u>Cross:</u> aa Bb dd Ee x AA bb Dd Ee

We can calculate the probability of getting heterozygous individuals in the progeny by using the <u>product rule</u>. Assuming that these four genes <u>assort independently</u> (<em>events that occur independently from each other</em>), we can infer that the F1 will have the next genotypic proportions for each gene:

1) aa     x     AA

F1) 4/4=1 Aa

2) Bb    x    bb

F1) ½ bb

     ½ Bb

3) dd    x    Dd

F1) ½ dd

     ½ Dd

4) Ee    x    Ee

F1) ¼ EE

    2/4 = ½ Ee

     ¼ ee

So, to know what the probability is that the F1 of being heterozygous for all loci, we must multiply the respective individual probabilities of getting a heterozygous genotype, like this:  

1 Aa   x   ½ Bb   x    ½ Dd    x    ½ Ee = 1/8 AaBbDdEe

                                 

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3 years ago
Identify three major similarities and three differences between prokaryotic cells and eukaryotic cells. Answer in complete sente
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The three main differences between prokaryotic and eukaryotic cells are as follows-

  • Prokaryotic cells are comprised of circular DNA, whereas eukaryotic cells are made up of linear DNA.
  • Prokaryotic cells does not contain any nucleus, whereas eukaryotic cells are comprised of a well-distinct nucleus.
  • Prokaryotic cells does not contain chromosomes, whereas eukaryotic cells are comprised of chromosomes.
7 0
2 years ago
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