Answer: alternative D.
Explanation: For the DNA to have the double strand structure, it is necessary to copy the sequence of the existing DNA strand in a complementary sequence of nucleotides, forming hydrogen bonds between them. The mRNA also uses this strategy when reading the DNA strand during the transcription, in order for the translation to begin.
Answer:
The first statement is correct. Genetically modified salmon produce more growth hormone protein which enables them to grow all year round.
Explanation:
The following is the explanation why all other sentences aren't correct.
Genetically modified salmon and wild salmon would't have identical DNA. The genetically modified are ~99.99986% salmon, with the addition of 4,205 base pairs. Wild salmon reproduce sexually while the genetically modified salmon is sterile. Wild salmon don't an altered protein sequence, genetically modified ones do.
Answer:
01. the continued existence of organisms that are best adapted to their environment, with the extinction of others, as a concept in the Darwinian theory of evolution.
02. It shrinks as species begin fighting for resources.
03. The animal will experience a lack of growth.
04. Level 1: Plants and algae make their own food and are called producers. Level 2: Herbivores eat plants and are called primary consumers. Level 3: Carnivores that eat herbivores are called secondary consumers. Level 4: Carnivores that eat other carnivores are called tertiary consumers.
Explanation:
Answer:
(i) An allele is a variant of a gene, can either be short or tall.
Dominant = the tall allele that "trumps" the short allele. if a dominant and recessive allele is present (heterozygous) then the dominant phenotype will be shown.
(ii) David's eyes are Brown
(iii) Sarah's eyes are blue
(iv) David - B, b
Sarah - b, b
(v) Possible genotypes include Bb and bb. These give the phenotypes of brown eyes or blue eyes.
(vi) The chance for blue eyes is 50% (or 1:1 ratio)
