Name the three types of neurons classified according to the direction in which the impulse is being transmitted. Define or explain each of them. Sensory neurons, also called afferent neurons, transmit impulses to the spinal cord and brain from all areas of the body.
Answer: Chemical bonding
Explanation: Bonding by sharing electrons is known as covalent bonding and bonding by transferring electrons is known as ionic bonding. Both are a type of chemical bond that bond elements together into molecules.
If you have the same dna as someone then u might even have the same traits that that person has
Answer:
- A homozygous male (bcd⁻/bcd⁻) child is possible only when the mother is heterozygous (bcd⁺/bcd⁻) and the father is homozygous (bcd⁻/bcd⁻).
- In Normal vs. failed embryogenesis, in the F1 generation of the cross, all of them will have normal embryogenesis.
- In Normal vs. failed embryogenesis, in the F2 generation of the cross, 75% of them will have normal embryogenesis and 25% of them will not undergo embryogenesis.
Explanation:
1. bcd⁻/bcd⁻ × bcd⁺/bcd⁻
↓
bcd⁺/bcd⁻, bcd⁺/bcd⁻, bcd⁻/bcd⁻, bcd⁻/bcd⁻
∴ Male homozygous is possible.
2. Normal embryogenesis = bcd⁺/bcd⁺
Failed embryogenesis = bcd⁻/ bcd⁻
bcd⁺/bcd⁺ × bcd⁻/ bcd⁻
↓
All progeny will be bcd⁺/bcd⁻ in the F1 generation.
∴ All of them will undergo normal embryogenesis.
3. In F2 generation,
bcd⁺/bcd⁻ × bcd⁺/bcd⁻
↓
bcd⁺/bcd⁺ , bcd⁺/bcd⁻, bcd⁺/bcd⁻, bcd⁻/ bcd⁻
∴ 25% of them is normal and will undergo normal embryogenesis, 50% of them will undergo normal embryogenesis as bcd protein is present and 25% of them will not undergo embryogenesis as bcd protein is absent.
∴ 75% will undergo normal embryogenesis and 25% will not undergo embryogenesis.