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never [62]
4 years ago
12

If the nucleus of this cell has 84 chromosomes, how many chromosomes would this cell’s sperm cell have? A: 168. B: 84. C: 42. D:

21
Biology
1 answer:
damaskus [11]4 years ago
5 0

Answer:

C. 42

Explanation:

A sperm cell is a sex cell which is a haploid cell and thus has half the chromosomes of a somatic cell which is a diploid cell.

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A six-member committee is formed to plan a Christmas formal. The
tankabanditka [31]

Total number of different committees = C(14,6) = N 

We have two cases where we have less than 2 teachers. 

case 1: 1 teacher (out of 5) 

Number of ways to choose 1 teacher = C(5,1) = 5 

Number of ways to choose the remaining members from students = C(9,5) 

Total number of ways to choose a committee with exactly 1 teacher = 5C(9,5) = N1  

case 2: no teacher 

Number of ways to choose 6 students = C(9,6) = N2 Probability to choose at least two teachers 

= (N-N1-N2)/N 

=109/143

I hope tmy answer helps you

3 0
3 years ago
What trends do you see in theorganisms of the ecosystem ifyou decrease CO2?
Maru [420]

Question:

Solution (explanation):

Within an ecosystem, we can find photosynthetic organisms such as plants. The general chemical reaction for photosynthesis is 6 carbon dioxide molecules and 6 water molecules, with the addition of solar energy. This produces 1 glucose molecule and 6 oxygen molecules. Therefore, if one of the reactants of the photosynthetic reaction, namely carbon dioxide, decreases, the amount of glucose (energy storage molecules) will decrease. Remember that energy storage molecules include glucose, starch, and fat.

Answer: we can conclude that the correct answer is:

Decrease in energy storage molecules.

5 0
1 year ago
What are some examples of adaptations birds have to be successful in their environnement ?
bixtya [17]
Weather and climate can be one thing
4 0
3 years ago
The sickle-cell allele is pleiotropic (that is, it affects more than one phenotypic trait). Specifically, this allele affects ox
butalik [34]

Answer:

adaptations are compromises

Explanation:

The pleiotropic gene involved in sickle-cell anemia is an example of heterozygous advantage. This means that the heterozygous genotype is favourale over other two genotypes (recessive homozygous and dominant homozygous). Eventhough it has harmful effect (sickle cell disease carrier) heterozygous genotype enables resistance to infection (malaria) and that is why this genotype is still favourable by natural selection. This phenomenon is evidence of compromise between harmful ad benefit.

4 0
3 years ago
(SELECT ALL THAT APPLY)
nika2105 [10]

Answer:

thrust faults, turbidite, lava, and fault blocks.

Explanation:

Because the three exceptions to the law of superposition are intrusions, folding or faulting, and extrusions. Fault blocks are an example of faulting. Lava is relative to extrusions because it is far below the earth when it is formed.

7 0
3 years ago
Read 2 more answers
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