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mrs_skeptik [129]
2 years ago
5

For humans, freckles and broad noses are dominant to no freckles and narrow noses. Use the pinned square below to determine the

possible offspring from a cross between two heterozygous freckles broad nose people

Biology
1 answer:
Gekata [30.6K]2 years ago
4 0

If we name the gene for freckles with F, then the genotypes for having freckles are Ff (heterozygous), FF (dominant homozygous) and for no freckles ff (recessive homozygous).

If we name the gene for nose shape with N, than the genotypes for broad noses are NN (dominant homozygous) and Nn (heterozygous) and for narrow noses nn (recessive homozygous). A cross between two heterozygous:

P: FfNn  x  FfNn

F1:

9/16 are with freckles and broad noses

3/16 are with freckles and narrow noses

3/16 are with no freckles and broad noses

1/16 are with no freckles and narrow noses.

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BARSIC [14]

Answer:

a.Most bacteria and fungi are harmless and may be beneficial to other living things.

Explanation:

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Bacteria and Fungi are beneficial to other organisms in the sense that they form mutualistic relationships with other living organisms. For example, certain species of bacteria helps to fix nitrogen in the root nodules of leguminous plants, while fungi forms a mutualistic relationship with algae called LICHEN where they benefit one another in a way or the other.

7 0
2 years ago
When sediments deposit in lakes or oceans, how do they lay? in large vertical mounds that spread out towards thin horizontal lay
Taya2010 [7]
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8 0
3 years ago
Read 2 more answers
what are homologous and vestigial structures and how do they support the theory of evolution by natural selection
sweet-ann [11.9K]

Answer:

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Explanation:

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6 0
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zhenek [66]
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6 0
3 years ago
The reaction-center chlorophyll of photosystem I is known as P700 because
jonny [76]

Answer:

The correct answer will be option-B.

Explanation:

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Thus, Option-B is the correct answer.

3 0
3 years ago
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