Now it is clear that genes are what carry our traits through generations and that genes are made of deoxyribonucleic acid (DNA). But genes themselves don't do the actual work. Rather, they serve as instruction books for making functional molecules such as ribonucleic acid (RNA) and proteins, which perform the chemical reactions in our bodies.Proteins do many other things, too. They provide the body's main building materials, forming the cell's architecture and structural components. But one thing proteins can't do is make copies of themselves. When a cell needs more proteins, it uses the manufacturing instructions coded in DNA.The DNA code of a gene—the sequence of its individual DNA building blocks, labeled A (adenine), T (thymine), C (cytosine) and G (guanine) and collectively called nucleotides— spells out the exact order of a protein's building blocks, amino acids.
Occasionally, there is a kind of typographical error in a gene's DNA sequence. This mistake— which can be a change, gap or duplication—is called a mutation.
B.
It allows some substances to pass through but blocks the passage of others.
washing your hands, avoid touching your face a lot, if you have a cold or flu <u>STAY AT YO HOUSE</u> and if you have to sneeze do it in your elbow not on nobody else;)
Answer:
The correct answer will be- true (assuming the student is asking the true or false)
Explanation:
Biodiversity refers to the diversity of the biological world. The biological world is composed of the living organisms and their associated concepts.
The biodiversity represents the variety of organisms and species in an ecosystem, variety in the ecosystems and the genes which contribute to the variation in the organisms along with controlling the traits of organisms. The biodiversity is the major factor which has maintained the natural sustainability on Earth.
Thus, true is the correct answer.
Answer:
9 out of 16 offsprings
Explanation:
This question involves two genes in guinea pig; one coding for coat texture and the other for coat color. The alleles for smooth coat (S) and black coat (B) are dominant over rough coat (s) and white coat (b).
In this question, two heterozygous guinea pigs were crossed i.e. SsBb × SsBb. The gametes produced by each parent is as follows: SB, Sb, sB, sb. Using these gametes in a punnet square (see attached image), the proportion of offsprings will be:
Smooth black coat (S_B_) = 9
Smooth white coat (S_bb) = 3
Rough black coat (ssB_) = 3
Rough white coat (ssbb) = 1
Hence, according to this question, 9 out of 16 offsprings will have a smooth black coat on average.
