Answer:
a) Genotype of each parent plant= Tt
b) Genotypes of parent plants= Tt and tt
Explanation:
a) In the first cross, the tall and short progeny was obtained in almost a 3:1 ratio (78: 27). This means that both the parent plants were heterozygous for the gene of plant height. The genotype of each of the parents was Tt. A cross between Tt and Tt gives following progeny ratio=
Tt x Tt = 3 tall (1/2 TT and 1/4 Tt) : 1 short (1/4 tt)
b) In the second cross, tall and short progeny was obtained in almost a 1: 1 ratio (121: 118). This means that one parent plant was homozygous recessive (tt) and the other was heterozygous dominant (Tt).
Tt x tt = 1 tall: 1 short.
Answer:
Option D.
Explanation:
Crossing over is an important characteristic of meiosis which provides the genetic variation and various allelic combinations present in the offspring. Hence the answer is option D.
Answer:
1 left.
Explanation:
You have 4 particles on the left and 6 particles on the right. An equilibrium state is where both sides would have the same amount of particles.
So 1 particle from the right will have to move to the left.
Think of it this way.
4 does not equal 6.
5 does equal 5
Answer:
The mitosis process includes only four phases of the event in mitotic cell division.
Explanation:
- Mitosis is the biological cell division cycle that produces tow daughter cell with equivalent number of chromosomes.
- In mitosis the nucleus divides, chromosome separates and moves to the opposite poles and forms two daughter cell at last.
- There are four phases in the mitosis cell division: prophase, metaphase, anaphase, and telophase repectively in the order.
- These four phases causes cytokinesis and occur in sequential order.
Answer:
The nucleotide sequence of a DNA codon is TAG. In an mRNA molecule transcribed from this DNA, the codon has the sequence 5'-<u>AUC-3'</u>. In the process of protein synthesis, a transfer RNA pairs with the mRNA codon. The nucleotide sequence of the tRNA anticodon is <u>3'-UAG-5'</u>. The amino acid attached to the tRNA is <u>Isoleucine</u>.
Explanation:
In the process of protein synthesis the mRNA contains the sequence of nucleotides —transcribed from the DNA— that defines the sequence of amino acids that a synthesized protein will have.
Codons are triplets of nitrogenous bases present in mRNA, which encode an amino acid, as well as the start and end of protein synthesis.
Anticodons correspond to triplets of bases present in transfer RNA (tRNA), which correspond with mRNA codons. tRNA is responsible for coupling amino acids to the polypeptide chain being synthesized. In view of this:
<em>- DNA triplet: TAG</em>
<em>- Codon mRNA: 5'-AUC-3'
</em>
<em>- Anticodon tRNA: 3'-UAG-5'</em>
<em>- Amino acid: Isoleucine</em>
