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zzz [600]
3 years ago
11

Why do birds have thick chest muscles​

Biology
2 answers:
sammy [17]3 years ago
8 0

Answer:

These muscles promote good control of the downstroke and upstroke movements of the wings for flight. It allows them to make powerful strokes and this leads to smoother gliding during flight.

faltersainse [42]3 years ago
7 0
They said it better than I would’ve but it’s right
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In a population with two alleles, B and b, the allele frequency of B=0.59. What would be the frequency of the heterozygotes if t
Levart [38]

Answer:

0.483

Explanation:

The given population is in Hardy-Weinberg equilibrium. If the gene has two alleles, the sum total of the frequencies of these two alleles will be one.  

Therefore, the total of the frequency of allele B and frequency of allele b will be 1. f(B) + f(b)=1

If the frequency of allele "B" is 0.59, then the frequency of allele "b" will be=1-0.59= 0.41

The frequency of heterozygous genotype in the population= 2pq

p= frequency of the dominant allele

q= frequency of the recessive allele

So, 2pq= 2 x 0.59 x 0.41 = 0.483

6 0
3 years ago
Which describes the dependent variable in an experiment
Reika [66]
<span>It is the variable in an experiment is not directly altered</span>
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3 years ago
The shortest length of time required to kill all test microbes at a specified temperature is the thermal death ________ whereas
Aliun [14]

Answer:

time; point

Explanation:

The complete question is as follows:

The shortest length of time required to kill all test microbes at a specified temperature is the thermal death __________ whereas the lowest temperature required to kill all microbes in a sample within 10 minutes is the thermal death _________.

time; point

window; point

point; time

time; temperature

  • When a population of bacteria gets killed due to exposure to high temperatures then this is termed as thermal death.
  • The time taken to kill a specific microbe at a specific temperature is termed as the thermal death time. The length of the time taken depends on the nature of the target microbe and hence, varies from one to another.
  • The lowest temperature that will kill all the microbes in a sample within ten minutes is defined as the thermal death point. The temperature at which the microbes get killed within 10 minutes also varies from one microbe to another.
  • Thermal death results in the disruption of the cell membranes of the microbes and hence can kill the microbes.
6 0
4 years ago
Dna is a polymer of __________, which consist of a sugar, a phosphate group, and a __________.
egoroff_w [7]

Answer: DNA is a polymer of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base

Explanation:

Every molecule in the human body are formed by the chains of particular substances. These components are arranged orderly as linked chains to give the structure called DNA.

The components include nucleotides—this is also considered the chemical substance in the human body which helps in the formation.

In this formation of chains, nitrogenous bases will also be linked to form a polymer of DNA.

7 0
2 years ago
Water molecules are attracted to the molecules in the wall of the glass container
almond37 [142]
Adhesion water sticking to a foreign substance. cohesion is water sticking to itself.
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3 years ago
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