Answer:
D. 3:1
Explanation:
Gregor Mendel, in one of his numerous studies, performed a cross between purebred dominant (TT) pea plants and purebred recessive (tt) pea plants. All the offsprings of this cross appeared heterozygous tall (Tt) in the F1 generation.
However, when he self-crossed the F1 generation i.e. Tt × Tt, Mendel obtained a phenotypic ratio of 3 tall plants (dominant traits) : 1 short plant (recessive). This showed that the masked gene (recessive) was still present.
Answer:
C. Abrasion
Explanation:
Rusting, isn't caused by friction.
Dissolving isn't caused by friction either.
Neither is exfoliation.
^^ By the process of elimination we can conclude that the answer is in fact C, abrasion! Hopefully this helps! I hope you do well!
When conducting legal experiments on animals, a researcher needs to obtain consent from the INSTITUTIONAL RESEARCH BOARD.
Each research institution has research board which sees into uses of animals for research purposes, consent must be obtained from the board before experiments involving usage of animals is carried out.
Answer:
it exchanges oxygen and carbon dioxide
Explanation:
You inhale oxygen and exhale carbon dioxide
Answer: ALSO IF YOU DONT HAVE A ACTIVITY SLIDE ( It shows what your doing or makes you do a activity or it can make you do research) FOR THIS YOU MIGHT NOT UNDERSTAND THE ANSWER!
Explanation:
Look at the screenshot and hope this helps! Zoom in the screenshot if needed! ^^