A homozygous dominant brown mouse (BB) crosses with a heterozygous brown mouse (Bb)
What percentage might be homozygous recessive (bb)?
If we draw a Punnett Square, we get BB, BB, Bb, and Bb.
Answer: 0% We don't have homozygous recessive. 50% is homozygous dominant and the other 50% is heterozygous.
To make it easier on us go to http://scienceprimer.com/punnett-square-calculator and edit the alleles to the PpRr for parent 1 and parent 2
Answer:
Good nutrition is important, because brain growth like the growth of the rest of the fetus' body is influenced by the quality of a pregnant woman's diet. Alcohol and cigarettes be avoided, because these can impair the formation and wiring of brain cells.On the other hand there is some information concerning the effects of environmental factors and their manipulation. During each prenatal stage, environmental factors affect the development of the fetus.
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Answer:
A molecule
Explanation:
When two or more atoms join together. If atoms combine that have two or more different elements, its called a compound. All compounds are molecules, but not all molecules are compounds.