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a_sh-v [17]
3 years ago
12

Which is the main organ of the excretory system?

Biology
2 answers:
aalyn [17]3 years ago
7 0

Answer: A. Kidney

Explanation: This is because the kidney is the chief organs of the urinary system.

Leokris [45]3 years ago
5 0
A. Kidney 
It is one of the major organs 
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A homozygous tall and heterozygous purple flowered plant was crossed with a heterozygous tall and white flowered pea plant. Pred
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Black fur (B) is dominant to white fur (b) in guinea pigs. An F1 cross was conducted and resulted in 100% heterozygous guinea pi
Lemur [1.5K]

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

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bb = white fur guinea pigs

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The m maxima carrying number of species in environment can support indefinitely .A group of spatially separated population of similar organism which interact at some levels.It s population in which multiple populations as butterflies and cool reef fishes.Humans are evolved from multiple interconnected spread out across Africa in large meta-population.

To learn more about Metapopulation here

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