Answer:
(a) Gg × Gg; (b) genotypic = 1:2:1, phenotypic = 3:1
Explanation:
a) A cross between two gray seeded plants produces progeny with gray and white seeds in 3:1 ratio (302:98=3:1). This means that the parent plants are heterozygous and each has at least one recessive allele. If the allele "G" is responsible for gray seed and the allele "g" imparts white color to the seeds, the genotype of the heterozygous parents would be "Gg".
b) A cross between two heterozygous gray seeded parents would produce progeny in following ratio:
Genotype ratio= 1 GG: 2 Gg: 1 gg
Phenotype ratio= 3 Gray: 1 white
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Answer:</h2>
Option B) Nodules.
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Explanation:</h2>
- It is impossible for plants to fix atmospheric nitrogen(nitrogen present in soil) and hence they absorb nitrogen from the soil in the form of nitrates and ammonium.
- Plant absorbs nitrogen from soil through nodules present on roots.
- In case of leguminous(pulses) plant roots of the plant form a symbiotic association with nitrogen-fixing bacteria for example- Rhizobium.
- On the other hand if nitrates is directly absorbed by the plant, it is taken up by nitrate transporters which uses a proton gradient to power the nitrate to get transported.
- Absorbed nitrogen is transferred from root to shoot by xylem.
Result: Option B) is the correct answer.
Answer:
3,5, and 10 g samples of liver
Explanation:
There are two types of variables which are used for scientific experiments.
- Dependent variable
- Independent variable
A dependent variable can be described as the variable which is being measured or tested in an experiment. An independent variable can be described as the variable which is changed in the experiment to check if it has any effects on the dependent variable. An independent variable is the one which can be controlled.
Autonomic nervous system:
-heart beats
-stomach digest
-produce bile
-feel a hot pain
-release adrenaline
-diaphragm relaxes
-colon contracts
-pancreas secretes
...............
somatic nervous system:
-make peace sign
-climb stairs
-curl tongue
-fingers curl
-point toes
-stretch arm
-fist clenches.
A hypothesis that is not supported be the data is rejected