What 2 chemicals dose photosynthesis need as reactants

Which statement describes the offspring of the Fı generation when crossing a pea plant that is true breeding for green seeds wit

alukav5142 [94]

The offspring will inherit one allele from each parent.

<h3>Explanation:</h3>

The genetic crossing experiments lead to the formation of different hybrids which has several characters unlike their parents. Here the parents are homozygous.

One of the parent is homozygous yellow with respect to seed colour. So genetic combination of the parent will be YY.

The other parent is homozygous green with respect to seed color. So genetic combination of the parent will be yy.

Now as they are crossed the offsprings will have genetic combination of Yy.

This is seen that the offsprings carry one allele from both the parents.

7 0

3 years ago

Read 2 more answers

HELP ME ASAP!!!!!!!!!!!!!!!!

fredd [130]

28. Answer: All mutations do not affect the organisms due to the following reasons:-

1. The DNA consists of both coding and non coding regions. The coding regions are known as exons and non coding regions are called as introns. The non coding regions do not make up the protein. Thus, if the mutations occur in non coding regions they do not affect the organism.

2. There are some mutations that result in the change of the codon but the new codon formed codes for the same amino as the previous one. This is possible because of the degeneracy of genetic code. For eg, AAA codes for lysine, however if the mutation changes this code to AAU then this also codes for lysine. Such mutations are called as silent mutations.

3. There are some mutations which result in the change in amino acid however the new amino acid formed is similar to the previous one in its properties for e.g leucine and isoleucine. Such mutations are called as neutral mutations and they do not affect the organism

29. Answer: 1. The process of mitosis results in the formation of two diploid cells whereas meiosis results in the formation of 4 haploid cells.

2. The process of mitosis takes place to produce copies of the body cells whereas the process of meiosis takes place to produce the gametes.

Explanation:-

Mitosis is a process in which a cell undergoes a single round of division to produce two identical copies of itself . It occurs in 4 phases Prophase, metaphase, anaphase and telophase. This process occurs in the body cells.

Meiosis is a process in which a cell undergoes two rounds of cell division to produce 4 copies of haploid cells from a single diploid cell. This process takes place for the formation of gametes.

29. Answer:

Pros

1. Genetic engineering helps us to tackle several diseases. There are many diseases which are caused due to genetic mutations. Genetic engineering helps us to rectify these mutations and hence combat such diseases.

2. Genetic engineering helps us to produce new foods which can withstand adverse conditions such as high/low temperatures, low rainfall, are disease and pest resistant etc. This, genetic engineering helps to significantly improve crop production.

Cons

1. Genetic engineering leads to a decrease in genetic diversity.

2. It can lead to a decrease in the nutritional value of food as genetic engineering often causes an accelerated growth of animals and hence, the nutritional valie of poultry foods is compromised.

3 0

3 years ago

Why do houses have thick walls

Tanzania [10]

Because most of the time they have insulation in them so that it keeps your house warm.

8 0

4 years ago

Read 2 more answers

Explain how population sizes in nature are regulated

goblinko [34]

Answer:

Understanding Populations

Section 1 How Populations Change in Size

Objectives

Describe the three main properties of a population.

Describe exponential population growth.

Describe how the reproductive behavior of individuals can affect the growth rate of their population.

Explain how population sizes in nature are regulated.

What Is a Population?

A population is a group of organisms of the same species that live in a specific geographical area and interbreed. A population is a reproductive group because organisms usually breed with members of their own population.

Properties of Populations

Density is the number of individuals of the same species that live in a given unit of area. Dispersion is the pattern of distribution of organisms in a population. A population’s dispersion may be even, clumped, or random. Size, density, dispersion, and other properties can be used to describe populations and to predict changes within them.

How Does a Population Grow?

A population gains individuals with each new offspring or birth and loses them with each death. The resulting population change over time can be represented by the equation below.

Growth rate is an expression of the increase in the size of an organism or population over a given period of time. It is the birth rate minus the death rate. Overtime, the growth rates of populations change because birth rates and death rates increase or decrease. For this reason, growth rates can be positive, negative, or zero.

For the growth rate to be zero, the average number of births must equal the average number of deaths. If the adults in a population are not replaced by new births, the growth rate will be negative and the population will shrink.Explanation:

8 0

3 years ago

Give two examples of organisms that may have coevolved

user100 [1]

Fig reproduction and fig wasps are a common example used.

However, you're looking for two organisms so predator and prey. This could be Coyote and Deer, Lion and Gazelle... You name it.

3 0

4 years ago