How does a DNA molecule control the activities of a cell

1 answer:

Colt1911 [192]2 years ago

4 0

Well there are 4 things in a dna molecule and that is adenine guanine thymine and cytosine well the DNA molecule keeps the cell moving in the right direction and also helps the cell reproduce and stay healthy

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Guinea pig coat color is determined by a single gene. The allele for black coat color is dominant to brown. In a cross between t

Gwar [14]

Answer:

In a cross between two black-haired guinea pigs, 20 offspring are born. If both parents were heterozygous, probability would predict that approximately 1 out of 20 offspring would have brown hair

Explanation:

The two parents crossed were heterozygous dominant black coat color, after crossing 75% gives dominant black color coat while 25% gives only brown coat color homozygous

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2 years ago

Explain Mendel's law of independent assortment and how the 9:3:3:1 phenotypic ratio among the F2 of a dihybrid cross provides ev

GrogVix [38]

Answer:

Explanation:

Mendel's law of independent assortment state that two different genes assort independently in gamete formation.

To reach this conclusion, one has to do a dihybrid cross. This means that two genes responsible for different traits need to be analyzed at the same time.

1) Starting with a parental generation of a cross between two pure lines (homozygous for both genes) with different traits, a plant with yellow and round seeds (YYRR) and another with green and wrinkled seeds (yyrr). The F1 will be phenotypically homogeneous (yellow and round), and genotypically heterozygous (YyRr).

2) If the individuals from the F1 are crossed with one another, we have to do a Punnett Square to determine the phenotypic ratio of the F2.

If the genes assort independently, the F1 individuals will produce their different gametes with the same probability. Each possible gamete will appear in a 1/4 proportion: YR, Yr, yR, yr.
The 9:3:3:1 ratio is a result of analyzing the possible phenotypes that result from the dihybrid cross.

See the attached image for an illustration of the crosses in each generation and the Punnett Square.

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Condons from a unit the genetic code that determines a specific

Softa [21]

The answer is amino acid.

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What happens when the body releases perspiration?

Alex777 [14]

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The country or culture we live in can largely influence what we consider to be a normal portion of food. what is the name of thi

STALIN [3.7K]

The culture of our country where we live can largely influenced by both symbolic and material elements. For is cultural ,not nutritional.

There is one most important things which we remember in connection with cultural factors involves in food portion of our daily life.Consist of values, attitude, habits and customs, acquired by learning all are starts by the starting experience of our childhood.

Food habits are largely influence by oldest and most deeply entrenched aspects of many culture. In many culture food has a social roles. Social and cultural factors to health programs in general. Culture also play an important role in human nutrition and must be considered in either clinical or public health intervention particular in immigrant population.

To learn more about human nutrition here

brainly.com/question/11844603

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11 months ago