A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
DNA contained within chromosome, chromosome in the cell nucleus
It will fracture
Sorry if I’m wrong
Answer:
a.)It will rise faster in cooler air
a.) heat
Explanation:
i
A hot air balloon rises faster if cold air were to surround it due to density differences between the air in the two medium.
- Hot air is less dense as the average kinetic energy of the molecules is greater.
- Cold air is denser.
- This density contrast causes the balloon to move up at a high pressure.
ii. Heat
The average kinetic energy of the molecules in a substance is termed heat.
Heat is a form of thermal energy measured by the kinetic energy possessed by molecules in a substance.
Answer:
25
Explanation:
Let stem length be represented by T and t alleles ( T is dominant over t ) and flower position be represented by A and a alleles ( A is dominant over a ).
A dihybrid cross of heterozygous pea plants will give progeny in following ratio:
TtAa X TtAa :
T_A_ = 9
ttA_ = 3
T_aa = 3
ttaa = 1
So, the ratio will be 9:3:3:1 where dwarf, terminal flower plant (ttaa) will be 1/16.
If 400 seeds are planted, (1/16)*400 = 25 plants will be expected to be dwarf with terminal flowers.