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Mrrafil [7]
3 years ago
9

Review Questions

Biology
1 answer:
mezya [45]3 years ago
7 0

Answer:

6==. During spermatogenesis, four sperm result from each primary spermatocyte, which divides into two haploid secondary spermatocytes; these cells will go through a second meiotic division to produce four spermatids

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Diagram a typical sequence of events in fossilization.
inna [77]
See image that I have attached

7 0
4 years ago
What intensity level of aerobic exercise is considered moderate for older adults?
Cloud [144]

Answer:

Moderate aerobic physical activity involves the physical activities that will result to increase heart rate and break a sweat.  

Depending on the severity of the operation moderate aerobic esercise is recommended for three (intense) to five days per week.

For older adults, moderate aerobic exercise accumulate 30 minutes a day for low- pressure, it means about 150 minutes a week. Moderate aerobic exercise for adults includes brisk walking, dancing or household chores.

Hence, the intensity level of moderate aerobic exercise for older adults should be 30 minutes a day.

4 0
3 years ago
How do the process of DNA replication and the laws of inheritance help cells and individuals pass on their
Lapatulllka [165]

Answer/Explanation:

DNA replication doubles each chromosome, meaning the cell can pass on DNA to daughter cells - the duplicated DNA is divided equally between the two new cells formed from the parent.

The laws of inheritance are:

1) The Law of Dominance: An organism with alternate forms of a gene, called alleles, will always display the form that is dominant, masking the recessive trait.

2) The Law of Segregation: In a diploid genome, like most eukaryotes, each trait is defined by a pair of genes (alleles). Each allele is randomly passed on to the gametes so that each gamete only contains one allele.   The offspring inherits one allele from each parent during the process of fertilization.

2) The Law of Independent Assortment: Genes for different traits are sorted independently from one another That is, the inheritance of one trait does not depend on the inheritance of another trait. so that the inheritance of one trait is not dependent on the inheritance of another.

8 0
3 years ago
Who were the two scientist who said that all cells come from pre-existing cells?
Grace [21]

Answer:

Matthias Schleiden and Theodore Schwann

4 0
4 years ago
What is the only thing that should differ between experimental treatments
azamat
If I understand you correctly; the two experimental treatments are the experimental condition and the control condition.

The thing differing between them should be what you want to examine, and especially the thing you want to know of how it influences something. So for example if you want to know how alcohol influences something, the difference should be that one condition will include alcohol and the other won't.
5 0
4 years ago
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