Answer:
Genotype ratio: 1, 1:1, 1:2:1
Phenotype ratio: 1, 3:1
Explanation:
Single gene pair cross is also known as monohybrid cross. This means that only one gene usually with two alleles is observed and it express one trait.
For example, if we name the gene for a certain trait with A, the possible genotypes are AA (dominant homozygous), aa (recessive homozygous) and Aa (heterozygous). Possible crosses are:
P: AA x AA
F1 : all of them are AA
The same is with aa x aa (all of the offspring are with aa genotype)
P: AA x Aa
F1: AA Aa AA Aa (genotype ratio 1:1) (phenotype ratio 3:1)
The same genotype ratio is in aa x Aa (offspring will have aa Aa aa Aa-(genotype ratio 1:1) (phenotype ratio 1:1)
P: Aa x Aa
F1: AA Aa Aa aa (genotype ratio 1:2:1) (phenotype ratio 3:1)
P: AA x aa
F1: Aa Aa Aa Aa (1)
To prevent the invasive species from entering texas freshwater ecosystem the following steps should be taken they are described below.
Explanation:
The invasive species are dangerous to natural resources because they destroy the natural resources and ecological system.
These invasive species are controlled by the biological control and mechanical control.
Thus to prevent the invasive species from entering texas freshwater ecosystem the following steps are taken they are
- Always clean and dry any equipment used in or around lakes or rivers after each use.
- Spray off your boat after you take it out of the water.
- Never dump aquarium or pet species into sewer system of waterways.
Cancerous cells go through interphase so fast, that they are constantly multiplying in mitosis.
Answer:
Recombinant DNA
Explanation:
Recombinant DNA can be used to change the genetic makeup of a cell, as in adding a gene to make a bacterial cell produce insulin.
