G Dimples and long eyelashes are both autosomal dominant traits. If a woman with no dimples, who is heterozygous for long eyelashes, mates with a man who is heterozygous for dimples, and has short eyelashes, What are the chances that this couple produces a child who is heterozygous in EITHER trait?

1/4

Explanation:

The woman has no dimples which means that she is homozygous recessive for this locus (gg). She is heterozygous for long eyelashes which makes her genotype Ll for this locus.

The man is heterozygous for dimples (Gg) and has short eyelashes (ll).  

The probability of the progeny heterozygous for either trait can be calculated separately for each locus:

gg x Gg= 1/2 Gg: 1/2 gg

Ll x ll= 1/2 Ll: 1/2  ll

The total probability of progeny who is heterozygous for both locus= 1/2 Gg x 1/2 Ll= 1/4 GgLl

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estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.