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Kobotan [32]
3 years ago
8

Why leaves of touch-me-not closed down on touching

Biology
1 answer:
gladu [14]3 years ago
3 0

The leaves close under various other stimuli, such as touching, warming, blowing, or shaking. ... The stimulus can also be transmitted to neighboring leaves. It is not known exactly why Mimosa pudica evolved this trait, but many scientists think that the plant uses its ability to shrink as a defense from herbivores

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Explain how a testcross can provide evidence for or against linkage.
MrRa [10]

Answer:

Testcrosses clarify linkage because each phenotypic class of progeny corresponds to each gamete type produced by the dihybrid parent.

Explanation:

  • A test cross involves the crossing of an individual with another phenotypically recessive individual so as to determine the zygosity of the former by analyses of the proportions of offspring phenotypes.
  • In order to determine linkage, the test cross shows that if the parentals are more than the recombinants, we can say that the two genes such as b and c  are genetically linked and therefore, they must be on the same chromosome.
  • Also, the test-crosses help to find out which alleles came from which parent.
  • By setting up testcrosses in which one parent is homozygous for the recessive alleles of both genes,we can analyze the gene combinations received in the gametes from the other, doubly heterozygous parent.
7 0
3 years ago
Both starch and cellulose are glucose polymers. why can animals easily degrade starch, but not cellulose?
Rus_ich [418]
Human bodies contain enzymes that can break down starch into glucose and use it for fuel. We do not have the enzymes necessary to breakdown cellulose.
4 0
3 years ago
Which of these organs produces hormones under the influence of the pituitary gland?
Eduardwww [97]
The answer is d because the ovary's job is twofold. They produce the hormones including estrogen.
7 0
3 years ago
Read 2 more answers
1.<br> What is one type of feature that results from wind deposition?
Igoryamba

You could answer with Loess or Sand dunes to the question as they are both results from wind deposition

5 0
3 years ago
Why is it more accurate to compare the average height gain of the control and experimental groups (instead of comparing individu
torisob [31]

Answer:

It is better to compare the average height gain of control and experimental groups of plants to eliminate all other variables.

Explanation:

If you evaluate individual plants, the data may vary. The experimental group is the one where an experimental procedure is performed while the control group does not receive any treatment.

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3 years ago
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