The exoskeleton of an arthropod is chitin.
Answer:
nitrogen is an important element of amino acids that make up proteins. Proteins provide structure and function to living organisms. my
Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.
Answer:
A, Both cells will replicate their DNA.
Explanation:
During the cell division, cell passes through several phases and divides. Before each phase, the cell has to pass through the checkpoints. At these cell checkpoints, the cell receives the internal and external signals.
When the cell is arrested at G₀ phase, the cell does not divide until it receives a signal to proliferate but when the cell passes the G₁ phase, the cell will divide continuously.
In the given question, if the cells when in their G₀ and G₁ phase receive proliferation signal, the G₀ phase cell will also divide and will replicate it DNA during S phase as G₁ phase cell will do.
Thus, Both the cells will divide their genetic material.
The genotypes and phenotypes their offsprings can have include only free lobes and attached hair.
<h3>What is Genotype?</h3>
This is defined as the genetic constituent of an organism while phenotype represents the physical characteristics.
Dd Ee when crossed will give DE, De, dE and de which means that the genotype will be homozygous dominant, heterozygous and homozygous recessive for free lobes and attached hair with the probability being 1/4 , 1/2 and 1/4 respectively.
Read more about Genotype here brainly.com/question/22117
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