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Zepler [3.9K]
3 years ago
5

Which of the following is a main function of a stem?

Biology
1 answer:
kramer3 years ago
7 0
<span>A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc. The internodes act as spaces that distance one node from another.</span>
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Which of the following does NOT improve a species ability to survive?
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The answer is D. competition
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g a true breeding pea plant with round and green seeds was crossed to a true-breeding pea plant with wrinkled and yellow seeds.
Sveta_85 [38]

Answer:

The probability of producing a round and green plant from this cross is 3/16

Explanation:

This question involves two distinct genes coding for seed shape and seed colour. In the seed shape gene, allele for round seeds (R) is dominant over allele for wrinked seeds (r), while in the seed colour gene, allele for yellow seed (Y) is dominant over allele for green seeds (y).

A truebreeding plant means that the plant possesses homozygous genotype. Hence, a truebreeding pea plant with round and green seeds will have genotype: RRyy while true-breeding pea plant with wrinkled and yellow seeds will have genotype: rrYY. These two parents will produce F1 offsprings with genotype: RrYy (heterozygous).

When the F1 offsprings are self-crossed (RrYy × RrYy), the following allelic combinations of gametes will be produced by each F1 parent: RY, Ry, rY, ry

Using these gametes in a punnet square (see attached image), 16 possible F2 offsprings with a phenotypic ratio 9:3:3:1 will be produced

9- Round yellow offsprings (R_Y_)

3- Round green offsprings (R_yy)

3- Wrinkled yellow offsprings (rrY_)

1- Wrinkled green offsprings (rryy)

8 0
3 years ago
What is a composite figure​
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A figure (or shape) that can be divided into more than one of the basic figures is said to be a composite figure (or shape).

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→ <u><em>Bacteria</em></u>

→ <u><em>Fungi</em></u>

Explanation:

The options that your talking about are:

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Tree (Is this one of your options? I'm not sure because I had this as one of my options.)

Hope this helped! :^)

⭐Brainliest will be appreciated!⭐

✉️Message me if you have any more questions!✉️

- ✨<u><em>7272033Alt</em></u>✨

Submitted on 4/13/2022 at 2:35 PM (To avoid plagarism, by users whom decide to copy.)

7 0
2 years ago
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