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3 years ago

If T = tall and t = short for a pea plant, what would a pea plant that has Tt as its alleles for that trait look like ?

Biology

2 answers:

Natalka [10]3 years ago

7 0

Tall yes that’s right

Vikentia [17]3 years ago

5 0

Answer:

B. Tall

Explanation:

since an allele that's paired with a dominant allele has no effect on the organism.

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What is a ester? .......

Nat2105 [25]

an organic compound made by replacing the hydrogen of an acid by an alkyl or other organic group. Many naturally occurring fats and essential oils are esters of fatty acids. SOURCE: GOOGLE
I sourced it so please dont report

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3 years ago

Read 2 more answers

Why do farmers want their plants to do as much photosynthesis as possible?

Mazyrski [523]

Farmers want their plants to photosynthesise as much as possible in order to increase their crop rate.

Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide. Increasing the light intensity will boost the speed of photosynthesis.

Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.

If it gets too cold, the rate of photosynthesis will decrease. Plants cannot photosynthesise if it gets too hot.

Farmers can use their knowledge of these limiting factors to increase crop growth in greenhouses. They may use artificial light so that photosynthesis can continue beyond daylight hours, or in a higher-than-normal light intensity. The use of paraffin lamps inside a greenhouse increases the rate of photosynthesis because the burning paraffin produces carbon dioxide, and heat too.

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3 years ago

What would happen if the voltage gated sodium and potassium channels opened further apart?

masha68 [24]

It is unlikely the membrane would become depolarized because although Na+ is coming in, K+ would be leaving simultaneously (canceling each other out). I hope my answer has come to your help. God bless and have a nice day ahead! Feel free to ask more questions.

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4 years ago

Imagine that a couple is planning to have children. The male is heterozygous for tongue rolling and homozygous dominant for unat

Amiraneli [1.4K]

Answer:

F1 generation: RrUu, rrUU, rrUu, RrUU

25% : 25%: 25%: 25%

Ratios

genotype: 1: 1: 1: 1 ...(from punnet square)
phenotype: 1 : 1

Explanation:

Punnett squares are a diagrammatic way of deciding the characteristics of hybrid offspring created by crosses in genetic breeding. Parental genotypes and phenotypes are widely recognized, and all usually obey normal Mendelian ratios and inheritance.

Mendelian genetics focuses on the origin or heritability of characteristics. Such traits are packed into one's own gamete, acquired by themselves, and sometimes display superiority, where one's impact can mask those of another trait.

These are called the Law of Segregation, Independent assortment and Dominance respectively.

For this cross... Assuming:

Unattached lobes= dominant

Rolling tongue= dominant
Parent generation or P generation:

Gametes:

R → rolling dominant (R), non-rolling recessive (r)

U → unattached dominant (U), attached recessive (u)

P generation: RUrU× rUru

rolling, unattached × non-rolling, unattached

F1 generation: RrUu, rrUU, rrUu, RrUU

25% : 25%: 25%: 25%

Ratios

genotype: 1: 1: 1: 1 ...(from punnet square)
phenotype: 1 : 1

Half the offspring have unattached lobes and can roll their tongues while the other half have unattached lobes and cannot roll their tongues...

Each punnet cross is attached below

6 0

4 years ago

What are the differences between Parasympathetic nervous system and sympathetic nervous system

krok68 [10]

The parasympathetic nervous system responds when the body is relaxed and at rest while sympathetic nervous system is responsible for response to emergency situation.

Explanation:

The sympathetic nervous system is called fight or flight division while the parasympathetic nervous system is the rest and digest division.
The pre-ganglionic neurons of sympathetic nervous system arises from lumbar and thoracic regions of spinal chord while the preganglionic neurons of parasympathetic nervous system arises from the brain and sacral region of the spinal cord.
The sympathetic nervous system decreases the activity of digestive system while the parasympathetic nervous system increases the activity of digestive system.
Sympathetic nervous system dilates bronchioles while parasympathetic nervous system constricts bronchioles.
Sympathetic nervous system increases blood pressure while parasympathetic nervous system usually do not effect blood pressure.
Sympathetic nervous system increases heart rate while parasympathetic nervous system decreases heart rate.

6 0

3 years ago