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dexar [7]
3 years ago
9

I need this urgently pls help its pretty simple :)

Biology
2 answers:
Lady_Fox [76]3 years ago
4 0

Answer:

The answer is D. Double Helix

HACTEHA [7]3 years ago
3 0

Answer:

its d a double helix i learnt this in 6th grade

Explanation:

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Explain what might happen if the chloroplasts in a cell are not working.
marishachu [46]

Answer:

The plant cell will not produce chloroplasts, and the plant will not be green any more.

Explanation:

Hope this helps!!

8 0
3 years ago
TACATCCATCAGTTACGC A guanine replaced the 1st Thymine in the original DNA strand above, how many amino acids would be changed as
Julli [10]

Answer:

One amino acid

Explanation:

This question is describing the occurrence of the process of mutation, which is the alteration in the genetic sequence of a gene. In this question, a DNA sequence was given as follows: TAC-ATC-CAT-CAG-TTA-CGC. However, a SUBSTITUTION MUTATION took place in such a way that the thymine base was replaced by a guanine base to have mutated sequence: GAC-ATC-CAT-CAG-TTA-CGC.

Since the mutation is a kind of substitution mutation, only the codon affected by that mutation will change. This DNA sequence will be transcribed into a mRNA sequence. The mRNA will be read codon by codon (a group of hree nucleotides) to produce amino acid. Since one codon will be involved, one amino acid will be affected.

4 0
3 years ago
Why cloning is considered as unethical? <br>​
vredina [299]

Answer:

Because the risks associated with reproductive cloning in humans introduce a very high likelihood of loss of life, the process is considered unethical. There are other philosophical issues that also have been raised concerning the nature of reproduction and human identity that reproductive cloning might violate.

3 0
4 years ago
Studies of monkeys raised with artificial mothers suggest that mother-infant emotional
madreJ [45]

The correct answer is B. Contact comfort

Explanation:

Studies with Rhesus monkeys were carried out by the psychologists Harry Harlow to study psychological and emotional aspects related to maternal separation and isolation. In this experiment, Harlow used baby monkeys and observed their behavior in different situations that included separating the baby and the mother, providing a fake mother, isolating baby monkeys for a long time and allowing baby monkeys to choose between their mother or food. The results of this experiment showed mother-infant emotional bonds were key for the development and socialization of monkeys, this could be explained as mother monkeys provided contact comfort which supported a positive development and prevailed over food or nourishment.

8 0
3 years ago
Two or more related lineages acquire a similar characteristic which is not found in a common ancestor. What are the structures c
motikmotik

Answer:

The correct option is D. analogous

Explanation:

We speak of an analogy when one structure is similar to another or has the same function, but whose embryonic development and its origin or ancestor is not common, they are different, in other words, they are analogous structures if they fulfill functions or acquire similar characteristics starting from the same medium, without requiring them to have the same evolutionary origin (they may or may not be similar structurally and embryologically).

3 0
3 years ago
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