Answer:
D. 1 BB : 2 Bb : 1 bb
Explanation:
This question involves a single gene coding for fur color in guinea pig. Black fur (B) is dominant over white fur (b). This means that, as stated in the question, if a black fur parent (BB) is crossed with a white fur parent (bb), a 100% heterozygous offspring (Bb) with black fur will result.
If two heterozygous guinea pigs are crossed i.e. Bb × Bb, the following gametes will be produced by each heterozygous parent:
Bb = B and b
Using these gametes in a punnet square (see attached image), offsprings with the following genotypic ratio will be produced:
1 BB : 2 Bb : 1 bb
BB and Bb = black fur guinea pigs
bb = white fur guinea pigs
Answer: A
Explanation: A stream terrace basically forms through this process– Temporary base level is eliminated; the stream downcuts upstream from the old temporary base level, and the former floodplain is left well above the present elevation of the stream.
Answer:
Asexual plant propagation methods produce new plants from vegetative parts of the original plant, such as the leaves, stems and roots. These methods are generally referred to as vegetative propagation.
<h3>e.g. rhizome, bulb, tuber etc</h3>
<h2>Hope it helps you!!</h2>
<u>Answer:</u>
<em>The south beach in Florida is at high risk of flood from high tide.</em>
<u>Explanation:</u>
Even at the no rain days the sea level of the south beach rises creating a fear for the resident about the flooding. The cities in the Florida are maximum on the limestone, so it is obvious that water will rise through it very soon.
The interaction between the sun and moon causes the high tides to occur even in the sunny days.
An example of a structural adaptation for a zebra is A) The zebra herd constantly moves and is in the Company of other grazers for survival.
