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Masteriza [31]
3 years ago
8

Please help I really would appreciate it

Biology
1 answer:
vekshin13 years ago
4 0

Answer:

Light, electric

Explanation:

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In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite f
Simora [160]

Answer:

The question lacks options, the options are:

A) 1 out of 16

B) 3 out of 16

C) 6 out of 16

D) 9 out of 16

The answer is 1 out of 16

Explanation:

This is a DIHYBRID cross because it involves two different genes coding for distinct traits. One of the traits will be dominant while the other recessive. Hence, parents that are purebred for opposite forms of the trait means that one parent is homozygous dominant while the other is homozygous recessive. When these two parents cross, they produce F1 offsprings that all possess the dominant trait but heterozygous/hybrids.

When these hybrids are self-crossed, they produce four different combinations of gametes which when crossed using a punnet square will result in F2 offsprings with a 9:3:3:1 phenotypic ratio according to Mendel's observation.

9 represents offsprings that are dominant for both traits

The two 3's represents offsprings that are recessive for one trait and dominant for the other respectively.

1 represents offsprings that are homozygous recessive for both traits.

Hence, 1 out of 16 offsprings will be homozygous recessive for both traits.

4 0
3 years ago
[25 points] what type of organism is the least numerous in a marine ecosystem? (producer, primary consumer, secondary consumer,
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Answer:

secondary consumer

Explanation:

They are the least because they play a less important role in the ecosystems.

6 0
3 years ago
Explain why there are more substances on Earth than are listed on the periodic table of elements.
bixtya [17]

The periodic table only accounts for elements.  It does not account for compounds, such as water.

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Colostrum, which is rich in protein, micronutrients, and antibodies, is replaced by mature milk in about colostrum, which is ric
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Things that can happen when light moves from one material, like air, to another, like water
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refraction is the answer

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