Answer:
There are two alleles, the recessive yellow allele and the dominant brown allele. The female is hom0zygous recessive while the male is heterozygous, this means that half of their children will be hom0zygous recessive and be yellow. The other half will be brown and heterozygous, meaning they have a yellow allele and a brown allele. If the female mated with a hom0zygous dominant male, then all of their offspring will end up being heterozygous and brown.
Answer:
10
Explanation:
The atomic mass minus the atomic number = neutrons
It should be the first one(glycolysis)
The geological process and interactions like earthquakes, volcanic eruption, cyclone etc, are responsible for the changes because these are very fast and sudden.
<u>Explanation:
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It is 4.5 billion years that <em>Earth has been formed and there have been changes since then</em>. Earthquakes, volcanic eruption, cyclone etc, are some of the geological process and interactions are the reasons for change in earth's surface. An earthquake usually split or divide the surface into many pieces in a very few seconds. While lava erupted from a volcano makes the land fertile by spreading around within minutes whereas a day of rainfall can lead to a flood in the neighborhoods and results in many losses.
Answer
Ribosome is an imporatnat cell organelle that play a key role in protein synthesis.
Discovery
Ribosome was discovered by <em>Palade</em> in 1955.
Structural composition
Chemically it is composed of an equal amount of rRNA and proteins, thats why it is also known as ribonucleoprotein.
Sub units of ribosomes
Ribosome is composed of two sub units one is smaller and the other one is larger. Both units are attached with each other with help of Mg atom.
Size of ribosome
In prokaryote the ribosome size is 70S, while in eukaryotes its size is 80S.
Polysome
When many ribosomes are attached to one mRNA strip it is called polysome or poly ribosome.
Role of ribosome
Ribosomes are the sites of synthesis of protein from amino acids.
Mechanism
mRNA which is the exact copy of DNA and formed in transcription come out from nucleus and attached to ribosomes. Now tRNA catch amino acids and come toward ribosome where its anti code match with genetic code of mRNA and then bonded to it. In this fashion a lot of amino acids are accumulated which make bonds with each others. Thus message present on mRNA in the form of genetic codes convert into protein through the process of transliteration.