Answer:
Tall and short trees are genotypically homozygous for their trait
Intermediated trees are genotypically heterozygous for their trait.
Explanation:
Let the allele representing tall trait be "T"
and the allele representing short trait be "t"
It is given that when a tall and short plant is fused all the offspring are of intermediate height.
This simply means that the both the plants are genotypically heterozygous for their traits
Genotype for tall tree - TT
Genotype for short tree - tt
TT * tt
Tt, Tt, Tt, Tt
All the offspring are of intermediate height.
Now these two plants of intermediate height are crossed
Tt * Tt
TT, Tt, Tt, tt
Out of four plants two are of intermediate height, one is of tall heingth and the remainig one is of short height
ok so I've done this problem before trust me:
A. bundles of microtubules that separate to opposite poles of a cell - CENTRIOLES
B. prepares protein-packed vesicles for release outside of the cell - VESICLES
C. small storage sacs containing water, food, and waste - VACUOLES
D. rough and smooth organelle that produces protein, steroids, and lipids - ENDOPLASMIC RETICULUM
E. tiny sacs at the end of the ER which contain protein - GOLGI COMPLEX
F. chains of protein fibers that provide support and shape - CYTOSKELETON
G. powerful enzymes used to process cellular activity - LYSOSOMES & PEROXISOMES
H. whip-like structures on cells that are used for movement - FLAGELLA
I. produces and assembles proteins - RIBOSOMES
Answer and Explanation:
A gene is a section of DNA. The change in the sequence of the DNA is known as mutation. Mutation always changes the sequence of the DNA. Sunlight can cause mutation. Sunlight produces structures named thymine dimers. Thymine dimers produce twist in the shape of DNA. These twists make DNA hard to copy, which can lead to mutation. It is essential to use sunscreen to block UVA and UVB rays to prevent thymine dimers from emerging in our cells. The US Food and Drug Agency recommends an SPF (sun protection factor) to defend against skin aging and skin cancer. X-ray radiation is a form used in x-rays. The energy level of the X-ray radiation is very high that can produce free radicals. Free radicals can steal electrons from DNA that can cause mutation. By using medical images, we can decrease exposure to X-rays. Less exposure to X-rays prevents mutation and also prevents the production of gene protein in other body parts.
<span>The Nerve is a tissue that carries messages throughout our bodies. </span>
