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3 years ago

Shortly after the zygote is formed, it begins the processes of duplication and division. each resulting new cell has:

1 answer:

7 0

Shortly after the zygote is formed, it begins the processes of duplication and division, each resulting new cell has the same number of chromosomes as was contained in the zygote. A fertilized egg is called a zygote until it divides into 16 cells, forming a ball-shaped structure called a morula. The events during the zygote stage involves integration of both parents' DNA into the cell nucleus and the beginning of rapid cell division, or cleavage.

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Hello, please help with this biology question!

charle [14.2K]

Answer:

the answer would be B. Digestive system, Muscular system, endocrine system, nervous system

4 0

3 years ago

Sler Test

kogti [31]

First, there is a need to understand what the carrying capacity is as it relates to the environment:

Carrying capacity refers to the maximum number of individuals of a particular species that and environment can support based on the resources it has.
The population of a species in an environment grows and oscillates around the carrying capacity of the environment.

Now let us look at the graph. The population size grew from 0 and then leveled off at 2,000 with time. The leveling-off also happened without any oscillation, meaning that the maximum population size the environment can support is 2,000.

Hence, the portion on the graph that indicates the carrying capacity would be the plot where the population size is 2,000 and the time being between 12 and 18. This has been circled and labeled as 'K' in the attached image.

More about carrying capacity can be found here: brainly.com/question/20270121

6 0

2 years ago

In beans the pod texture and growth form genes are located on different chromosomes. There are two varieties of beans in a farme

irina1246 [14]

Answer:

a. Genotype in F1 - TtBb

Phenotype in F1 - tough pods, bush-type growth

b. Proportion of F2 that are heterozygous for bush-type growth form = 5/8

c. Proportion of the F2 with tender pods = 1/4

d. Proportion of F2 that are heterozygous for growth form and have tender pods = 1/8

Explanation:

Since the two traits are located on different chromosomes, they will independently assort during gametes formation. T is dominant over t and B is dominant over b.

Two true-breeding varieties were crossed at the beginning of the program:

TTBB x ttbb

All F1 plants will have the genotype TtBb with tough pods and bush-type growth form.

Advancing the cross to F2:

TtBb x TtBb

Progeny

1 TTBB - tough pods, bush-type

2 TTBb - tough pods, bush-type

2 TtBB - tough pods, bush-type

4 TtBb - tough pods, bush-type

1 TTbb - tough pods, climbing-type

2 Ttbb - tough pods, climbing-type

1 ttBB - tender pods, bush-type

2 ttBb - tender pods, bush-type

1 ttbb - tender pods, climbing-type

Proportion of F2 that are heterozygous for bush-type growth form = 10/16 = 5/8

Proportion of the F2 with tender pods = 4/16 = 1/4

Proportion of F2 that are heterozygous for growth form and have tender pods = 2/16 = 1/8

7 0

3 years ago

A ______ food chain is one that includes a primary producer at the lowest trophic level and a herbivorous primary consumer at th

pentagon [3]

Answer:

The grazing food chain

Explanation:

There are two kinds of food chains one starting with autotrophs, the grazing food chain, and the other starting with dead organic matter, the detrital food chain.

4 0

2 years ago

1. How many total chromosomes are present in a normal bug karyotype? Please help :3

kirill [66]

There are a total of 23 chromosomes in female bug karyotypes and 24 in males.

8 0

2 years ago