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3 years ago

Which statement below defines epistasis?

Biology

1 answer:

trapecia [35]3 years ago

3 0

Answer:

The correct assertive is letter D. When one locus affects or coverbs the outcome of another locus.

Explanation:

Epistasis is when alleles of one gene inhibit an action of alleles of another pair, which may or may not be on the same chromosome. The gene that exerts inhibitory action is called epistatic, and the gene that inhibits it is called hypostatic. This fact about epistasis is common among animals and plants.

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What is the difference between Biogenous and Lithogenous?

antoniya [11.8K]

The main description of lithogenous came from rocks - Produced as surface rock is broken down by weathering like wind, rain, freezing/thawing. It is transported to the oceans by water, wind and gravity much sediment remains on continental margins. However, some sediment ends up on deep ocean floor as fine rock powder called red clay, brown clay, or brown mud. While Biogenous came from remains of living organisms shell and coral fragments. Hard skeletal parts of single-cell organisms of either calcareous (soluble shell) material or siliceous (non-soluble, clear, hard) material.

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4 years ago

How can animals have difficulty getting energy

Amanda [17]

Plants absorb energy from the sun and use photosynthesis to make sugars. Animals have mitochondria that use the sugars provided by plants to produce their own cellular energy. If there is not plant animal will have difficulty in getting energy. Also there are competition on the part of animals and human. I hope it helps.

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3 years ago

DNA polymerase has multiple mechanisms for editing and error correction whereas the capacity for error correction in RNA polymer

BigorU [14]

The given question is incomplete as the option are not provided however, the correct options are as follows:

Defective proteins are often degraded quickly, making their effects temporary.

Single amino acid substitutions caused by errors in mRNA transcription would not affect protein function.

Unlike DNA mutations, mRNA transcripts have short half-lives and are not inherited across many generations.

Degradation of defective proteins activates mRNA repair pathways RNA polymerases synthesize many transcripts per gene, so only a small fraction of RNA transcripts would have errors.

ch mRNA molecule is only translated once and then degraded

Answer:

The correct answer is - statements 1, 3, and 4.

Explanation:

DNA polymerase is the enzyme that is responsible for the production of the new DNA molecule and any mutation in this enzyme that will inhibit the DNA repair process which affects future generations.

RNA polymerase is an enzyme that is responsible for the transcription of DNA to mRNA and any error-prone mRNAs have chances of degradation. Error in DNA replication is from generation to generation as it is inherited

The process of transcription is quick.

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3 years ago

For this week's CRQ, you are to design your own genetic cross between a female and a male. Be sure to include each of the follow

svp [43]

Answer and Explanation:

Punnett squares are illustrations that display the product of hybrid trait crosses by genetic breeding. Established parent genotypes and phenotypes are used and are usually compatible with Mendelian ratios and inheritance. The phnomenon influencing this behaviour is the

Law of Segregation,
Law of Independent assortment
and Dominance

For this cross...

Assuming Widow's peak= dominant

1. What are the dominant and recessive traits in cross?

Parent generation or P generation:

gametes: Ww → Widow's peak dominant (W), No Widow's peak recessive (w)

2. Is the male homozygous dominant, homozygous recessive, or heterozygous?

Heterozygousity describes the allelic makeup; these traits are made of two different forms of the same gene.

Male: Ww → with the W.peak;

(Thus, with both W and w this is a heterozygous trait)

3. Is the female homozygous dominant, homozygous recessive, or heterozygous?

However, homozygous traits are made up of the same forms of the gene called alleles.

Female: ww → without the W.peak

(Thus, with both w ad w this is a homozygous trait)

1. genotypes and phenotypes for parent and offspring...

Assuming heterozygousity of the male , for the cross

P generation: Ww× ww

Widow's peak ×No Widow's peak

F1 generation:

genotype: Ww × ww ...(from punnet square)
phenotype: 2 with the W.peak; 2 without

∴ 50% are genotypically heterozygous while 50% is homozygous , 2 with the W.peak; 2 without

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3 years ago

What is the main role of a hormone?

Alex73 [517]

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3 years ago