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goldenfox [79]
3 years ago
7

Your biology instructor has assigned you a lab exercise to test a hypothesis regarding the inheritance of stem length in pea pla

nts. If your assignment is specifically to conduct a monohybrid cross for stem length from available genotypes growing in the lab, which of the following crosses should be performed?
A. Tt with tt
B. Tt with tt
C. Tt with TT
D. Tt with Tt
E. TT with TT
Biology
2 answers:
Varvara68 [4.7K]3 years ago
5 0

Answer:

D. Tt with Tt

Explanation:

In the given question, the student wants to study the stem length in the plants which are controlled by the T (dominant) and t (recessive) alleles.

To study the monohybrid cross for the stem length, the student must cross the heterozygous forms of the gene for the trait as it will produce the mixture of variables of height.

      cross-              Tt     x   Tt

                          T            t

                T       TT        Tt

                t        Tt         tt

1. Genotype TT - tall height

2. Genotype Tt- tall height

3. Genotype tt- small height

Thus, Option-D is correct answer.

Likurg_2 [28]3 years ago
5 0

Answer:

D

Explanation:

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3 years ago
The tall allele, t, is dominant to the short allele, t, in mendel's pea plants. you examine a pea plant that has a phenotype of
alexandr1967 [171]

Phenotype is the physical appearance of the organism, which is depicted by the genes. The genetic makeup of the organism is termed as genotype. Both genotype and phenotype are inter-dependent on each other. If the genotype changes, phenotype will change accordingly.

Gene is present in various forms and these forms are termed as alleles. Alleles are classified as dominant and recessive. When the phenotype of the organism is translated into the genotype, alleles are used.

Here, genotype of the tall plant could be either TT or Tt.

<u>Genotype of short plant will be tt </u>only. This is because short height is a recessive trait. It will be visible only when it is present in homozygous state, as in “tt”.

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2 years ago
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maxonik [38]

Answer:

B. An endothermic reaction

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We also know that the astronaut’s weight on Earth is 156.6 pounds. Which equation models the situation? no links pls they didn't
Klio2033 [76]

Given what we know, we can confirm that the equation to model the situation can be created by multiplying the mass of the astronaut by the force of gravity on earth.

<h3>What is Mass and the force of gravity?</h3>
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  • What we refer to as weight, is really the force being applied by an object together with the force of gravity.
  • Gravity is an invisible force applied by the earth on all objects.
  • Together will mass, these forces create what we know as weight.

Therefore, we can confirm that the equation to model the situation can be created by multiplying the mass of the astronaut by the force of gravity on earth, which would be 7.2 kg of mass multiplied by 9.807 m/s² which will result in a "weight" of 156.6 pounds or 71 kg.

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Retroviruses are viruses in which the genetic material consists of ribonucleic acid (RNA) instead of deoxyribonucleic acid (DNA). Retroviruses produce an enzyme known as reverse transcriptase that uses RNA as a template to manufacture DNA, which can then be permanently integrated into the DNA of the infected host cells.

Hope this helps please mark brainliest :)

6 0
2 years ago
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