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3 years ago

The term genetic ______ describes a change of the sequence of a dna molecule.

1 answer:

7 0

The term genetic mutation described a change of the sequence of a DNA molecule. Genetic mutations source an enduring change in the classification of base pairs which is DNA-building blocks that creates up a gene. Mutations can affect a single base pair or it can affect a larger segment even as well as multiple genes. When mutations are inbred from a parent they are existing in almost every cell of the body. This in contrast with acquired mutations that can occur at any time in a person’s life and are present in only in a subset of cells in the body. Developed mutations can be caused by environmental factors such as ultraviolet radiation from the sun, or when a cell itself makes a mistake in copying its DNA during cell division. The DNA sequence can be altered in different ways and each type of mutation can have varying effects on the health of a cell, tissue and/or individual.

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Can fish see air like the same way we see water? Do they not see water like we can't see air? (BRAIN BUSTERRR? NO CLUE!)

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The fish can not see water

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3 years ago

How many chromosomes are there in human ovum

denis-greek [22]

Answer:

23 chromosomes

Unlike all the other cells in a human body which are diploid, human sex cells are haploid. That means that both sperm cells and ova are haploid; containing only 23 chromosomes.

Explanation:

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3 years ago

Read 2 more answers

Explain why the number of red and yellow kernels on the ear of corn represents the results of cross that is observed

Grace [21]

Answer:

The red kernels are the dominant trait and will be more numerous on the ear of corn than the yellow. This happens because its dominance mearns that if it is a combination of either RR or Rr, it will still take over the r trait. The only time the yellow can be expressed entirely Is when the combination is rr.

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3 years ago

The pedigree below tracks the presence of dimples through a family's generation. Having dimples is an autosomal dominant trait.

yulyashka [42]

A pedigree is a representation of a family history tracking a trait. The graph shows the inheritance pattern of the trait and its expression through several generations.

<h3>What is an autosomal dominant trait?</h3>

The autosomal dominant trait is the characteristic that is coded by a gene located in an autosomal chromosome (this is, not a sexual chromosome).

This trait is dominant because it is coded by the dominant allele, meaning that the recessive allele codes for the absence of dimples. The presence of only one dominant allele in the genotype is enough for the idividual to express dimples.

<u> Genotype Phenotype </u>

DD, Homozygous dominant Dimples

Dd, Heterozygous Dimples

dd, Homozygous recessive No Dimples

<h3>What is a pedigree?</h3>

The pedigree is the representation of a family history conserning a certain trait. In this case, dimples.

The pedigree shows the expression -and inheritance pattern- of the trait through several generations.

To correctly interpret a pedigree, we need to know that

Family members

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

Trait/Phenotype

→ Healthy/normal/not affected individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

Generations

→ Each file is represented with a roman number, indicating the Generation.

Here we will assume that

Individuals represented with solid figures express dimples -shaded individuals-. They can be either DD or Dd. This is because dimples is not usuall.

Individuals with no dimples are represented with empty figures and are dd.

According to the provided pedigree,

I-1 ⇒ man DD or Dd

I-2 ⇒ woman dd

II-1 ⇒ man Dd or DD

II-2 ⇒ woman dd

II - 5 ⇒ woman dd

III - 1 ⇒ man Dd

III- 2 ⇒ woman dd

III - 6 ⇒ woman dd

Since this pedigree does not specify the relationship between individuals, I can not answer the question based on it. So, I will attach another tree to specify genotypes.

I advise you study this new example, and then follow the same reasoning to choose the correct individual according to you pedigree.

Yo can learn more about pedigrees at

brainly.com/question/19516649

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