Answer:
Cells can generate from nonliving matter,
Explanation:
He concluded that only living cells can produce cells/ only life can produce life. so if the fact that cells can generate from matter that is not living, it would disprove his theory because his theory was that only living things can produce living things.
Answer:
Closed the first one
Explanation:
In amphibians, reptiles, birds, and mammals, blood flow is directed in two circuits: one through the lungs and back to the heart, which is called pulmonary circulation, and the other throughout the rest of the body and its organs including the brain (systemic circulation).
most mammals, have closed cardiovascular systems. The two main circulation pathways in invertebrates are the single and double circulation pathways.
Answer:
The fraction of heterozygous individuals in the population is 32/100 that equals 0.32 which is the genotipic proportion for these endividuals.
Explanation:
According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the alleles. The genotypic frequencies after one generation are p² (Homozygous for allele p), 2pq (Heterozygous), q² (Homozygous for the allele q). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.
In the exposed example, the r-6 allelic frequency is 0,2. This means that if r-6=0.2, then the other allele frequency (R) is=0.8, and the sum of both the allelic frequencies equals one. This is:
p + q = 1
r-6 + R = 1
0.2 + 0.8 = 1
Then, the genotypic proportion for the homozygous individuals RR is 0.8 ² = 0.64
The genotypic proportion for the homozygous individuals r-6r-6 is 0.2² = 0.04
And the genotypic proportion for heterozygous individuals Rr-6 is 2xRxr-6 = 2 x 0.8 x 0.2 = 0.32
Answer:
Nucleic acids
Explanation:
Nucleic acids are one of the the four major biological molecules in living systems (the other three being; carbohydrate, protein, and lipids). Nucleic acid is a biological polymer that is made up of monomeric units called NUCLEOTIDES.
Nucleotides, are monomers of nucleic acids that consists of a 5-carbon sugar (ribose or deoxyribose), nitrogenous base (Adenine, Guanine, Cytosine and Thymine/Uracil) and a phosphate group (PO34-). Ribonucleic acid (RNA) are deoxyribonucleic acid (DNA) are the two types of nucleic acids.
